diff --git a/ui/gallery-prototype.js b/ui/gallery-prototype.js
index 53c16f10..caa05528 100755
--- a/ui/gallery-prototype.js
+++ b/ui/gallery-prototype.js
@@ -13,10 +13,10 @@ var BACKGROUND_MODES = [
 
 // remember the default backgrounds for modes...
 // ...this effectively makes the modes independant...
-// NOTE: null represent the default value...
+// NOTE: null represent the default value (no class set)...
 // NOTE: these will change if changed in runtime...
 var NORMAL_MODE_BG = 'dark' 
-var SINGLE_IMAGE_MODE_BG = BACKGROUND_MODES[BACKGROUND_MODES.length-1]
+var SINGLE_IMAGE_MODE_BG = 'black' 
 
 
 // ribbon/single view modes...
@@ -638,7 +638,8 @@ var toggleSingleImageMode = createCSSClassToggler('.viewer', 'single-image-mode'
 			if(action == 'on'){
 				NORMAL_MODE_BG = getBackgroundMode()
 				ORIGINAL_FIELD_SCALE = getElementScale($('.field'))
-			} else {
+			} else if(toggleSingleImageMode('?') == 'on'){
+				// save only when coming out of single image mode...
 				SINGLE_IMAGE_MODE_BG = getBackgroundMode()
 			}
 		},
diff --git a/ui/keybindings.js b/ui/keybindings.js
index f7023de5..4cd53ffa 100755
--- a/ui/keybindings.js
+++ b/ui/keybindings.js
@@ -1,6 +1,7 @@
 /*********************************************************************/
+// NOTE: use String.fromCharCode(code)...
 var keybindings = {
-	//72: 	toggleHelp,										//	???
+	//191: 	toggleHelp,										//	?
 	70:		toggleSingleImageMode,							//	f
 	13:		70,												//	Enter
 	84:		toggleSingleImageModeTransitions,				//	t
@@ -72,6 +73,7 @@ var keybindings = {
 	16:		function(){},
 	17:		16,
 	18:		16,
+	20:		16,												// Caps Lock
 }
 
 /* XXX old bindings...