diff --git a/gui/Android.mk b/gui/Android.mk
index 748c5ec..35d877b 100644
--- a/gui/Android.mk
+++ b/gui/Android.mk
@@ -17,6 +17,7 @@
     animation.cpp \
     conditional.cpp \
     slider.cpp \
+    slidervalue.cpp \
     listbox.cpp \
     keyboard.cpp \
     input.cpp \
@@ -52,6 +53,11 @@
 ifneq ($(TW_BRIGHTNESS_PATH),)
 	LOCAL_CFLAGS += -DTW_BRIGHTNESS_PATH=$(TW_BRIGHTNESS_PATH)
 endif
+ifneq ($(TW_MAX_BRIGHTNESS),)
+	LOCAL_CFLAGS += -DTW_MAX_BRIGHTNESS=$(TW_MAX_BRIGHTNESS)
+else
+	LOCAL_CFLAGS += -DTW_MAX_BRIGHTNESS=255
+endif
 ifneq ($(TW_NO_SCREEN_BLANK),)
 	LOCAL_CFLAGS += -DTW_NO_SCREEN_BLANK
 endif
diff --git a/gui/action.cpp b/gui/action.cpp
index b35074c..64049b2 100644
--- a/gui/action.cpp
+++ b/gui/action.cpp
@@ -540,6 +540,33 @@
             DataManager::SetValue(varName, value);
 			return 0;
         }
+		if (arg.find("*") != string::npos)
+		{
+			string varName = arg.substr(0, arg.find('*'));
+			string multiply_by_str = gui_parse_text(arg.substr(arg.find('*') + 1, string::npos));
+			int multiply_by = atoi(multiply_by_str.c_str());
+			int value;
+
+			DataManager::GetValue(varName, value);
+			DataManager::SetValue(varName, value*multiply_by);
+			return 0;
+		}
+		if (arg.find("/") != string::npos)
+		{
+			string varName = arg.substr(0, arg.find('/'));
+			string divide_by_str = gui_parse_text(arg.substr(arg.find('/') + 1, string::npos));
+			int divide_by = atoi(divide_by_str.c_str());
+			int value;
+
+			if(divide_by != 0)
+			{
+				DataManager::GetValue(varName, value);
+				DataManager::SetValue(varName, value/divide_by);
+			}
+			return 0;
+		}
+		LOGERR("Unable to perform compute '%s'\n", arg.c_str());
+		return -1;
 	}
 	
 	if (function == "setguitimezone")
diff --git a/gui/devices/1024x600/res/ui.xml b/gui/devices/1024x600/res/ui.xml
index 1615ee9..b24bda3 100755
--- a/gui/devices/1024x600/res/ui.xml
+++ b/gui/devices/1024x600/res/ui.xml
@@ -197,6 +197,14 @@
 		<variable name="mount_storage_row" value="500" />
 		<variable name="wipe_list_height" value="300" />
 		<variable name="wipe_button_y" value="190" />
+		<variable name="slidervalue_x" value="256" />
+		<variable name="slidervalue_w" value="512" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="2" />
+		<variable name="slidervalue_padding" value="0" />
+		<variable name="slidervalue_sliderw" value="10" />
+		<variable name="slidervalue_sliderh" value="50" />
 	</variables>
 
 	<templates>
@@ -2289,100 +2297,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row4_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="slidervalue_x" y="%row5_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="slidervalue_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/1024x768/res/ui.xml b/gui/devices/1024x768/res/ui.xml
index d160562..5b9c3fc 100644
--- a/gui/devices/1024x768/res/ui.xml
+++ b/gui/devices/1024x768/res/ui.xml
@@ -197,6 +197,14 @@
 		<variable name="mount_storage_row" value="500" />
 		<variable name="wipe_list_height" value="400" />
 		<variable name="wipe_button_y" value="190" />
+		<variable name="slidervalue_x" value="256" />
+		<variable name="slidervalue_w" value="512" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="2" />
+		<variable name="slidervalue_padding" value="0" />
+		<variable name="slidervalue_sliderw" value="10" />
+		<variable name="slidervalue_sliderh" value="50" />
 	</variables>
 
 	<templates>
@@ -2289,100 +2297,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row4_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="slidervalue_x" y="%row5_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="slidervalue_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/1080x1920/res/ui.xml b/gui/devices/1080x1920/res/ui.xml
index 93d539c..625cad8 100644
--- a/gui/devices/1080x1920/res/ui.xml
+++ b/gui/devices/1080x1920/res/ui.xml
@@ -182,6 +182,13 @@
 		<variable name="storage_list_height" value="1313" />
 		<variable name="wipe_list_height" value="1305" />
 		<variable name="wipe_button_y" value="975" />
+		<variable name="slidervalue_w" value="1060" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="3" />
+		<variable name="slidervalue_padding" value="30" />
+		<variable name="slidervalue_sliderw" value="15" />
+		<variable name="slidervalue_sliderh" value="90" />
 	</variables>
 
 	<templates>
@@ -2266,100 +2273,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row3_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="col1_x" y="%row4_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="col1_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/1280x800/res/ui.xml b/gui/devices/1280x800/res/ui.xml
index 5ba4700..3ffa79d 100644
--- a/gui/devices/1280x800/res/ui.xml
+++ b/gui/devices/1280x800/res/ui.xml
@@ -197,6 +197,14 @@
 		<variable name="mount_storage_row" value="550" />
 		<variable name="wipe_list_height" value="420" />
 		<variable name="wipe_button_y" value="250" />
+		<variable name="slidervalue_x" value="320" />
+		<variable name="slidervalue_w" value="640" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="2" />
+		<variable name="slidervalue_padding" value="0" />
+		<variable name="slidervalue_sliderw" value="15" />
+		<variable name="slidervalue_sliderh" value="60" />
 	</variables>
 
 	<templates>
@@ -2289,100 +2297,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row4_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="slidervalue_x" y="%row5_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="slidervalue_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/1920x1200/res/ui.xml b/gui/devices/1920x1200/res/ui.xml
index 935080a..af9aba6 100644
--- a/gui/devices/1920x1200/res/ui.xml
+++ b/gui/devices/1920x1200/res/ui.xml
@@ -197,6 +197,14 @@
 		<variable name="mount_storage_row" value="850" />
 		<variable name="wipe_list_height" value="850" />
 		<variable name="wipe_button_y" value="375" />
+		<variable name="slidervalue_x" value="540" />
+		<variable name="slidervalue_w" value="960" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="3" />
+		<variable name="slidervalue_padding" value="0" />
+		<variable name="slidervalue_sliderw" value="20" />
+		<variable name="slidervalue_sliderh" value="80" />
 	</variables>
 
 	<templates>
@@ -2289,100 +2297,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row4_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="slidervalue_x" y="%row5_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="slidervalue_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/2560x1600/res/ui.xml b/gui/devices/2560x1600/res/ui.xml
index 7c46a99..12c032b 100644
--- a/gui/devices/2560x1600/res/ui.xml
+++ b/gui/devices/2560x1600/res/ui.xml
@@ -197,6 +197,14 @@
 		<variable name="mount_storage_row" value="1100" />
 		<variable name="wipe_list_height" value="1100" />
 		<variable name="wipe_button_y" value="500" />
+		<variable name="slidervalue_x" value="640" />
+		<variable name="slidervalue_w" value="1280" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="4" />
+		<variable name="slidervalue_padding" value="0" />
+		<variable name="slidervalue_sliderw" value="30" />
+		<variable name="slidervalue_sliderh" value="90" />
 	</variables>
 
 	<templates>
diff --git a/gui/devices/320x480/res/ui.xml b/gui/devices/320x480/res/ui.xml
index c85db3a..66865a7 100644
--- a/gui/devices/320x480/res/ui.xml
+++ b/gui/devices/320x480/res/ui.xml
@@ -177,6 +177,13 @@
 		<variable name="storage_list_height" value="340" />
 		<variable name="wipe_list_height" value="330" />
 		<variable name="wipe_button_y" value="270" />
+		<variable name="slidervalue_w" value="304" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="1" />
+		<variable name="slidervalue_padding" value="8" />
+		<variable name="slidervalue_sliderw" value="4" />
+		<variable name="slidervalue_sliderh" value="20" />
 	</variables>
 
 	<templates>
@@ -2253,100 +2260,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row3_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="col1_x" y="%row4_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="col1_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/480x800/res/ui.xml b/gui/devices/480x800/res/ui.xml
index 6efca35..e33e5b1 100644
--- a/gui/devices/480x800/res/ui.xml
+++ b/gui/devices/480x800/res/ui.xml
@@ -177,6 +177,13 @@
 		<variable name="storage_list_height" value="400" />
 		<variable name="wipe_list_height" value="550" />
 		<variable name="wipe_button_y" value="400" />
+		<variable name="slidervalue_w" value="460" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="1" />
+		<variable name="slidervalue_padding" value="13" />
+		<variable name="slidervalue_sliderw" value="7" />
+		<variable name="slidervalue_sliderh" value="40" />
 	</variables>
 
 	<templates>
@@ -2253,100 +2260,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row3_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="col1_x" y="%row4_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="col1_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/480x854/res/ui.xml b/gui/devices/480x854/res/ui.xml
index de4d159..e4487f6 100644
--- a/gui/devices/480x854/res/ui.xml
+++ b/gui/devices/480x854/res/ui.xml
@@ -176,6 +176,13 @@
 		<variable name="storage_list_height" value="400" />
 		<variable name="wipe_list_height" value="550" />
 		<variable name="wipe_button_y" value="400" />
+		<variable name="slidervalue_w" value="460" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="1" />
+		<variable name="slidervalue_padding" value="13" />
+		<variable name="slidervalue_sliderw" value="7" />
+		<variable name="slidervalue_sliderh" value="40" />
 	</variables>
 
 	<templates>
@@ -2252,100 +2259,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row3_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="col1_x" y="%row4_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="col1_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/540x960/res/ui.xml b/gui/devices/540x960/res/ui.xml
index febc3db..6ea2e1c 100644
--- a/gui/devices/540x960/res/ui.xml
+++ b/gui/devices/540x960/res/ui.xml
@@ -177,6 +177,13 @@
 		<variable name="storage_list_height" value="675" />
 		<variable name="wipe_list_height" value="670" />
 		<variable name="wipe_button_y" value="475" />
+		<variable name="slidervalue_w" value="520" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="2" />
+		<variable name="slidervalue_padding" value="15" />
+		<variable name="slidervalue_sliderw" value="8" />
+		<variable name="slidervalue_sliderh" value="45" />
 	</variables>
 
 	<templates>
@@ -2253,100 +2260,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row3_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="col1_x" y="%row4_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="col1_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/720x1280/res/ui.xml b/gui/devices/720x1280/res/ui.xml
index e2a02b1..d43aae9 100644
--- a/gui/devices/720x1280/res/ui.xml
+++ b/gui/devices/720x1280/res/ui.xml
@@ -182,6 +182,13 @@
 		<variable name="storage_list_height" value="875" />
 		<variable name="wipe_list_height" value="870" />
 		<variable name="wipe_button_y" value="650" />
+		<variable name="slidervalue_w" value="700" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="2" />
+		<variable name="slidervalue_padding" value="20" />
+		<variable name="slidervalue_sliderw" value="10" />
+		<variable name="slidervalue_sliderh" value="60" />
 	</variables>
 
 	<templates>
@@ -2266,100 +2273,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row3_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="col1_x" y="%row4_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="col1_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/800x1280/res/ui.xml b/gui/devices/800x1280/res/ui.xml
index 7282c92..f7226f0 100755
--- a/gui/devices/800x1280/res/ui.xml
+++ b/gui/devices/800x1280/res/ui.xml
@@ -178,6 +178,13 @@
 		<variable name="storage_list_height" value="875" />
 		<variable name="wipe_list_height" value="870" />
 		<variable name="wipe_button_y" value="650" />
+		<variable name="slidervalue_w" value="780" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="2" />
+		<variable name="slidervalue_padding" value="20" />
+		<variable name="slidervalue_sliderw" value="10" />
+		<variable name="slidervalue_sliderh" value="60" />
 	</variables>
 
 	<templates>
@@ -2254,100 +2261,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row3_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%col1_x%" y="%row2_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="col1_x" y="%row4_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="col1_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/devices/800x480/res/ui.xml b/gui/devices/800x480/res/ui.xml
index 97fdf44..bb324df 100755
--- a/gui/devices/800x480/res/ui.xml
+++ b/gui/devices/800x480/res/ui.xml
@@ -197,6 +197,14 @@
 		<variable name="mount_storage_row" value="500" />
 		<variable name="wipe_list_height" value="300" />
 		<variable name="wipe_button_y" value="150" />
+		<variable name="slidervalue_x" value="200" />
+		<variable name="slidervalue_w" value="400" />
+		<variable name="slidervalue_line_clr" value="#FFFFFF" />
+		<variable name="slidervalue_slider_clr" value="#33B5E5" />
+		<variable name="slidervalue_lineh" value="1" />
+		<variable name="slidervalue_padding" value="0" />
+		<variable name="slidervalue_sliderw" value="7" />
+		<variable name="slidervalue_sliderh" value="40" />
 	</variables>
 
 	<templates>
@@ -2297,100 +2305,47 @@
 				<text>Screen Settings</text>
 			</object>
 
-			<object type="text" color="%text_color%">
-				<font resource="font" />
-				<placement x="%center_x%" y="%row4_text_y%" placement="5" />
-				<text>Screen Timeout: %tw_screen_timeout_secs% seconds</text>
-			</object>
-
 			<object type="button">
-				<placement x="%col1_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>None</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=0</action>
-			</object>
-
-			<object type="button">
-				<placement x="%col2_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>60</text>
-				<image resource="medium_button" />
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_false" />
 				<action function="set">tw_screen_timeout_secs=60</action>
 			</object>
 
 			<object type="button">
-				<placement x="%col3_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>120</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=120</action>
+				<placement x="%slidervalue_x%" y="%row3_text_y%" />
+				<font resource="font" color="%text_color%" />
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<text>Enable screen timeout.</text>
+				<image resource="checkbox_true" />
+				<action function="set">tw_screen_timeout_secs=0</action>
 			</object>
 
-			<object type="button">
-				<placement x="%col4_medium_x%" y="%row2_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>180</text>
-				<image resource="medium_button" />
-				<action function="set">tw_screen_timeout_secs=180</action>
+			<object type="slidervalue">
+				<condition var1="tw_screen_timeout_secs" op="!=" var2="0" />
+				<placement x="slidervalue_x" y="%row5_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Screen timeout in seconds:</text>
+				<data variable="tw_screen_timeout_secs" min="15" max="300" />
 			</object>
 
-			<object type="text" color="%text_color%">
+			<object type="slidervalue">
 				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<font resource="font" />
-				<placement x="%center_x%" y="%row12_text_y%" placement="5" />
-				<text>Brightness: %tw_brightness_display%</text>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col1_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>25%</text>
-				<image resource="medium_button" />
+				<placement x="slidervalue_x" y="%row12_text_y%" w="%slidervalue_w%" />
+				<font resource="font" color="%text_color%" />
+				<colors line="%slidervalue_line_clr%" slider="%slidervalue_slider_clr%" />
+				<dimensions lineh="%slidervalue_lineh%" linepadding="%slidervalue_padding%" sliderw="%slidervalue_sliderw%" sliderh="%slidervalue_sliderh%" />
+				<text>Brightness: %tw_brightness_pct%%</text>
+				<data variable="tw_brightness_pct" min="10" max="100" />
 				<actions>
-					<action function="cmd">echo %tw_brightness_25% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=25%</action>
-					<action function="set">tw_brightness=%tw_brightness_25%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col2_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>50%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_50% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=50%</action>
-					<action function="set">tw_brightness=%tw_brightness_50%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col3_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>75%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_75% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=75%</action>
-					<action function="set">tw_brightness=%tw_brightness_75%</action>
-				</actions>
-			</object>
-
-			<object type="button">
-				<condition var1="tw_has_brightnesss_file" var2="1" />
-				<placement x="%col4_medium_x%" y="%row4_medium_y%" />
-				<font resource="font" color="%button_text_color%" />
-				<text>100%</text>
-				<image resource="medium_button" />
-				<actions>
-					<action function="cmd">echo %tw_brightness_100% > &quot;%tw_brightness_file%&quot;</action>
-					<action function="set">tw_brightness_display=100%</action>
-					<action function="set">tw_brightness=%tw_brightness_100%</action>
+					<action function="set">tw_brightness=%tw_brightness_max%</action>
+					<action function="compute">tw_brightness*%tw_brightness_pct%</action>
+					<action function="compute">tw_brightness/100</action>
+					<action function="cmd">echo %tw_brightness% > &quot;%tw_brightness_file%&quot;</action>
 				</actions>
 			</object>
 
diff --git a/gui/objects.hpp b/gui/objects.hpp
index 973c3cf..ff5429a 100644
--- a/gui/objects.hpp
+++ b/gui/objects.hpp
@@ -909,6 +909,72 @@
 	virtual int KeyRepeat(void);
 };
 
+class GUISliderValue: public RenderObject, public ActionObject, public Conditional
+{
+public:
+	GUISliderValue(xml_node<>* node);
+	virtual ~GUISliderValue();
+
+public:
+	// Render - Render the full object to the GL surface
+	//  Return 0 on success, <0 on error
+	virtual int Render(void);
+
+	// Update - Update any UI component animations (called <= 30 FPS)
+	//  Return 0 if nothing to update, 1 on success and contiue, >1 if full render required, and <0 on error
+	virtual int Update(void);
+
+	// SetPos - Update the position of the render object
+	//  Return 0 on success, <0 on error
+	virtual int SetRenderPos(int x, int y, int w = 0, int h = 0);
+
+	// NotifyTouch - Notify of a touch event
+	//  Return 0 on success, >0 to ignore remainder of touch, and <0 on error
+	virtual int NotifyTouch(TOUCH_STATE state, int x, int y);
+
+	// Notify of a variable change
+	virtual int NotifyVarChange(std::string varName, std::string value);
+
+	// SetPageFocus - Notify when a page gains or loses focus
+	virtual void SetPageFocus(int inFocus);
+
+protected:
+	int measureText(const std::string& str);
+	int valueFromPct(float pct);
+	float pctFromValue(int value);
+	void loadValue(bool force = false);
+
+	std::string mVariable;
+	int mMax;
+	int mMin;
+	int mValue;
+	char *mValueStr;
+	float mValuePct;
+	std::string mMaxStr;
+	std::string mMinStr;
+	Resource *mFont;
+	GUIText* mLabel;
+	int mLabelW;
+	COLOR mTextColor;
+	COLOR mLineColor;
+	COLOR mSliderColor;
+	bool mShowRange;
+	bool mShowCurr;
+	int mLineX;
+	int mLineY;
+	int mLineH;
+	int mLinePadding;
+	int mPadding;
+	int mSliderY;
+	int mSliderW;
+	int mSliderH;
+	bool mRendered;
+	int mFontHeight;
+	GUIAction *mAction;
+	bool mChangeOnDrag;
+	int lineW;
+};
+
 // Helper APIs
 bool LoadPlacement(xml_node<>* node, int* x, int* y, int* w = NULL, int* h = NULL, RenderObject::Placement* placement = NULL);
 
diff --git a/gui/pages.cpp b/gui/pages.cpp
index bf44b38..11fe9b0 100644
--- a/gui/pages.cpp
+++ b/gui/pages.cpp
@@ -273,6 +273,12 @@
             mRenders.push_back(element);
             mActions.push_back(element);
         }
+		else if (type == "slidervalue")
+		{
+			GUISliderValue *element = new GUISliderValue(child);
+			mRenders.push_back(element);
+			mActions.push_back(element);
+		}
 		else if (type == "listbox")
 		{
 			GUIListBox* element = new GUIListBox(child);
diff --git a/gui/slidervalue.cpp b/gui/slidervalue.cpp
new file mode 100644
index 0000000..d369ace
--- /dev/null
+++ b/gui/slidervalue.cpp
@@ -0,0 +1,418 @@
+// slidervalue.cpp - GUISliderValue object
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/reboot.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <string>
+
+extern "C" {
+#include "../twcommon.h"
+#include "../minuitwrp/minui.h"
+}
+
+#include "rapidxml.hpp"
+#include "objects.hpp"
+
+GUISliderValue::GUISliderValue(xml_node<>* node) : Conditional(node)
+{
+	xml_attribute<>* attr;
+	xml_node<>* child;
+
+	mMin = 0;
+	mMax = 100;
+	mValue = 0;
+	mLineH = 2;
+	mLinePadding = 10;
+	mSliderW = 5;
+	mSliderH = 30;
+	mLineX = 0;
+	mLineY = 0;
+	mValueStr = NULL;
+	mAction = NULL;
+	mShowCurr = true;
+	mShowRange = false;
+	mChangeOnDrag = false;
+	mRendered = false;
+
+	mLabel = NULL;
+	ConvertStrToColor("white", &mTextColor);
+	ConvertStrToColor("white", &mLineColor);
+	ConvertStrToColor("blue", &mSliderColor);
+
+	if (!node)
+	{
+		LOGERR("GUISliderValue created without XML node\n");
+		return;
+	}
+
+	mLabel = new GUIText(node);
+	if(mLabel->Render() < 0)
+	{
+		delete mLabel;
+		mLabel = NULL;
+	}
+
+	mAction = new GUIAction(node);
+
+	child = node->first_node("font");
+	if (child)
+	{
+		attr = child->first_attribute("resource");
+		if (attr)
+			mFont = PageManager::FindResource(attr->value());
+
+		attr = child->first_attribute("color");
+		if (attr)
+		{
+			std::string color = attr->value();
+			ConvertStrToColor(color, &mTextColor);
+		}
+	}
+
+	// Load the placement
+	LoadPlacement(node->first_node("placement"), &mRenderX, &mRenderY, &mRenderW);
+
+	child = node->first_node("colors");
+	if (child)
+	{
+		attr = child->first_attribute("line");
+		if (attr)
+			ConvertStrToColor(attr->value(), &mLineColor);
+
+		attr = child->first_attribute("slider");
+		if (attr)
+			ConvertStrToColor(attr->value(), &mSliderColor);
+	}
+
+	child = node->first_node("data");
+	if (child)
+	{
+		attr = child->first_attribute("variable");
+		if (attr)
+			mVariable = attr->value();
+
+		attr = child->first_attribute("min");
+		if (attr)
+		{
+			mMinStr = gui_parse_text(attr->value());
+			mMin = atoi(mMinStr.c_str());
+		}
+
+		attr = child->first_attribute("max");
+		if (attr)
+		{
+			mMaxStr = gui_parse_text(attr->value());
+			mMax = atoi(mMaxStr.c_str());
+		}
+
+		if (mMin > mMax)
+			mMin = mMax;
+
+		attr = child->first_attribute("default");
+		if (attr)
+		{
+			string parsevalue = gui_parse_text(attr->value());
+			int def = atoi(parsevalue.c_str());
+
+			if (def < mMin)      def = mMin;
+			else if (def > mMax) def = mMax;
+			DataManager::SetValue(mVariable, def);
+		}
+
+		attr = child->first_attribute("showrange");
+		if (attr)
+			mShowRange = atoi(attr->value());
+
+		attr = child->first_attribute("showcurr");
+		if (attr)
+			mShowCurr = atoi(attr->value());
+
+		attr = child->first_attribute("changeondrag");
+		if (attr)
+			mChangeOnDrag = atoi(attr->value());
+	}
+
+	child = node->first_node("dimensions");
+	if (child)
+	{
+		attr = child->first_attribute("lineh");
+		if (attr)
+		{
+			string parsevalue = gui_parse_text(attr->value());
+			mLineH = atoi(parsevalue.c_str());
+		}
+
+		attr = child->first_attribute("linepadding");
+		if (attr)
+		{
+			string parsevalue = gui_parse_text(attr->value());
+			mPadding = atoi(parsevalue.c_str());
+		}
+
+		attr = child->first_attribute("sliderw");
+		if (attr)
+		{
+			string parsevalue = gui_parse_text(attr->value());
+			mSliderW = atoi(parsevalue.c_str());
+		}
+
+		attr = child->first_attribute("sliderh");
+		if (attr)
+		{
+			string parsevalue = gui_parse_text(attr->value());
+			mSliderH = atoi(parsevalue.c_str());
+		}
+	}
+
+	gr_getFontDetails(mFont ? mFont->GetResource() : NULL, (unsigned*) &mFontHeight, NULL);
+
+	if(mShowCurr)
+	{
+		int maxLen = std::max(strlen(mMinStr.c_str()), strlen(mMaxStr.c_str()));
+		mValueStr = new char[maxLen+1];
+	}
+
+	loadValue(true);
+
+	mLinePadding = mPadding;
+	if (mShowRange)
+	{
+		int textW = std::max(measureText(mMaxStr), measureText(mMinStr));
+		mLinePadding += textW;
+	}
+
+	SetRenderPos(mRenderX, mRenderY, mRenderW);
+}
+
+GUISliderValue::~GUISliderValue()
+{
+	delete mLabel;
+	delete mAction;
+	delete[] mValueStr;
+}
+
+void GUISliderValue::loadValue(bool force)
+{
+	if(!mVariable.empty())
+	{
+		int value = DataManager::GetIntValue(mVariable);
+		if(mValue == value && !force)
+			return;
+
+		mValue = value;
+	}
+
+	mValue = std::max(mValue, mMin);
+	mValue = std::min(mValue, mMax);
+	mValuePct = pctFromValue(mValue);
+	mRendered = false;
+}
+
+int GUISliderValue::SetRenderPos(int x, int y, int w, int h)
+{
+	mRenderX = x;
+	mRenderY = y;
+	if (w || h)
+	{
+		mRenderW = w;
+		mRenderH = h;
+	}
+
+	mRenderH = mSliderH;
+	if(mShowCurr)
+		mRenderH += mFontHeight;
+
+	if (mLabel)
+	{
+		int lw, lh;
+		mLabel->GetCurrentBounds(lw, lh);
+		int textX = mRenderX + (mRenderW/2 - lw/2);
+
+		mLabel->SetRenderPos(textX, mRenderY);
+
+		y += lh;
+		mRenderH += lh;
+	}
+
+	mSliderY = y;
+	mLineY = (y + mSliderH/2) - (mLineH/2);
+
+	mLineX = mRenderX + mLinePadding;
+
+	mActionX = mRenderX;
+	mActionY = mRenderY;
+	mActionW = mRenderW;
+	mActionH = mRenderH;
+	lineW = mRenderW - (mLinePadding * 2);
+
+	return 0;
+}
+
+int GUISliderValue::measureText(const std::string& str)
+{
+	void* fontResource = NULL;
+	if (mFont)  fontResource = mFont->GetResource();
+
+	return gr_measureEx(str.c_str(), fontResource);
+}
+
+int GUISliderValue::Render(void)
+{
+	if (!isConditionTrue())
+	{
+		mRendered = false;
+		return 0;
+	}
+
+	if(mLabel)
+	{
+		int w, h;
+		mLabel->GetCurrentBounds(w, h);
+		if (w != mLabelW) {
+			mLabelW = w;
+			int textX = mRenderX + (mRenderW/2 - mLabelW/2);
+			mLabel->SetRenderPos(textX, mRenderY);
+		}
+		int res = mLabel->Render();
+		if(res < 0)
+			return res;
+	}
+
+	// line
+	gr_color(mLineColor.red, mLineColor.green, mLineColor.blue, mLineColor.alpha);
+	gr_fill(mLineX, mLineY, lineW, mLineH);
+
+	// slider
+	uint32_t sliderX = (mValuePct*lineW)/100 + mLineX;
+	sliderX -= mSliderW/2;
+
+	gr_color(mSliderColor.red, mSliderColor.green, mSliderColor.blue, mSliderColor.alpha);
+	gr_fill(sliderX, mSliderY, mSliderW, mSliderH);
+
+	void *fontResource = NULL;
+	if(mFont) fontResource = mFont->GetResource();
+	gr_color(mTextColor.red, mTextColor.green, mTextColor.blue, mTextColor.alpha);
+	if(mShowRange)
+	{
+		int rangeY = (mLineY - mLineH/2) - mFontHeight/2;
+		gr_textEx(mRenderX + mPadding/2, rangeY, mMinStr.c_str(), fontResource);
+		gr_textEx(mLineX + lineW + mPadding/2, rangeY, mMaxStr.c_str(), fontResource);
+	}
+
+	if(mValueStr && mShowCurr)
+	{
+		sprintf(mValueStr, "%d", mValue);
+		int textW = measureText(mValueStr);
+		gr_textEx(mRenderX + (mRenderW/2 - textW/2), mSliderY+mSliderH, mValueStr, fontResource);
+	}
+
+	mRendered = true;
+	return 0;
+}
+
+int GUISliderValue::Update(void)
+{
+	if (!isConditionTrue()) return mRendered ? 2 : 0;
+	if (!mRendered)         return 2;
+
+	if(mLabel)
+		return mLabel->Update();
+	return 0;
+}
+
+int GUISliderValue::valueFromPct(float pct)
+{
+	int range = abs(mMax - mMin);
+	return mMin + (pct * range) / 100;
+}
+
+float GUISliderValue::pctFromValue(int value)
+{
+	return float((value - mMin) * 100) / abs(mMax - mMin);
+}
+
+int GUISliderValue::NotifyTouch(TOUCH_STATE state, int x, int y)
+{
+	if (!isConditionTrue())     return -1;
+
+	static bool dragging = false;
+	switch (state)
+	{
+	case TOUCH_START:
+		if (x >= mRenderX && x <= mRenderX + mRenderW &&
+			y >= mRenderY && y <= mRenderY + mRenderH)
+		{
+			dragging = true;
+		}
+		// no break
+	case TOUCH_DRAG:
+	{
+		if (!dragging)  return 0;
+
+		x = std::max(mLineX, x);
+		x = std::min(mLineX + lineW, x);
+
+		mValuePct = float(((x - mLineX) * 100) / lineW);
+		int newVal = valueFromPct(mValuePct);
+		if (newVal != mValue) {
+			mRendered = false;
+			mValue = newVal;
+			if (mChangeOnDrag) {
+				if (!mVariable.empty())
+					DataManager::SetValue(mVariable, mValue);
+				if (mAction)
+					mAction->doActions();
+			}
+		}
+		break;
+	}
+	case TOUCH_RELEASE:
+	{
+		if (!dragging)  return 0;
+		dragging = false;
+
+		if (!mVariable.empty())
+			DataManager::SetValue(mVariable, mValue);
+		if (mAction)
+			mAction->doActions();
+		break;
+	}
+	case TOUCH_REPEAT:
+	case TOUCH_HOLD:
+		break;
+	}
+	return 0;
+}
+
+int GUISliderValue::NotifyVarChange(std::string varName, std::string value)
+{
+	if (mLabel)
+		mLabel->NotifyVarChange(varName, value);
+	if (varName == mVariable) {
+		int newVal = atoi(value.c_str());
+		if(newVal != mValue) {
+			mValue = newVal;
+			mValuePct = pctFromValue(mValue);
+			mRendered = false;
+		}
+	}
+	return 0;
+}
+
+void GUISliderValue::SetPageFocus(int inFocus)
+{
+	if (inFocus)
+		loadValue();
+}