upgrade dojo to 1.8.3 (refs #570)

31 files changed, 414 insertions, 478 deletions

diff --git a/lib/dijit/themes/claro/layout/AccordionContainer.css b/lib/dijit/themes/claro/layout/AccordionContainer.css
index 34831764c..b59aeca8b 100644
--- a/lib/dijit/themes/claro/layout/AccordionContainer.css
+++ b/lib/dijit/themes/claro/layout/AccordionContainer.css
@@ -50,16 +50,17 @@
   background-color: transparent;
   /* pick up color from dijitAccordionInnerContainer */
 
-  background-image: url("../layout/images/accordion.png");
-  background-position: 0 0;
+  background-image: url("../images/standardGradient.png");
   background-repeat: repeat-x;
+  background-image: -moz-linear-gradient(rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
+  _background-image: none;
   padding: 5px 7px 2px 7px;
   min-height: 17px;
   color: #494949;
 }
-.dj_ie6 .claro .dijitAccordionTitle {
-  background-image: none;
-}
 .claro .dijitAccordionContainer .dijitAccordionChildWrapper {
   /* this extends the blue trim styling of the title bar to wrapping around the node.
 	 * done by setting margin
@@ -83,7 +84,13 @@
   transition-duration: 0.1s;
 }
 .claro .dijitAccordionInnerContainerActive .dijitAccordionTitle {
-  background-position: 0 -136px;
+  background-image: url("../images/activeGradient.png");
+  background-repeat: repeat-x;
+  background-image: -moz-linear-gradient(rgba(190, 190, 190, 0.98) 0px, rgba(255, 255, 255, 0.65) 3px, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(rgba(190, 190, 190, 0.98) 0px, rgba(255, 255, 255, 0.65) 3px, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(rgba(190, 190, 190, 0.98) 0px, rgba(255, 255, 255, 0.65) 3px, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(rgba(190, 190, 190, 0.98) 0px, rgba(255, 255, 255, 0.65) 3px, rgba(255, 255, 255, 0) 100%);
+  _background-image: none;
   color: #000000;
 }
 /* Open (a.k.a. selected) pane */
@@ -93,7 +100,13 @@
 }
 .claro .dijitAccordionInnerContainerSelected .dijitAccordionTitle {
   color: #000000;
-  background-position: 0 0;
+  background-image: url("../images/standardGradient.png");
+  background-repeat: repeat-x;
+  background-image: -moz-linear-gradient(rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
+  _background-image: none;
   /* avoid effect when clicking the title of the open pane */
 
 }
@@ -114,7 +127,7 @@
 }
 .claro .dijitAccordionInnerContainerSelectedHover .dijitAccordionChildWrapper, .claro .dijitAccordionInnerContainerSelectedActive .dijitAccordionChildWrapper {
   background-color: #ffffff;
-  border: 1px solid #759dc0 !important;
+  border: 1px solid #759dc0;
   -webkit-box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.25);
   -moz-box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.25);
   box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.25);
diff --git a/lib/dijit/themes/claro/layout/AccordionContainer.less b/lib/dijit/themes/claro/layout/AccordionContainer.less
index b3aa62248..fd4308c30 100644
--- a/lib/dijit/themes/claro/layout/AccordionContainer.less
+++ b/lib/dijit/themes/claro/layout/AccordionContainer.less
@@ -43,16 +43,12 @@
 }
 .claro .dijitAccordionTitle {
 	background-color: transparent;	/* pick up color from dijitAccordionInnerContainer */
-	background-image: url("../@{image-layout-accordion}");
-	background-position:0 0;
-	background-repeat:repeat-x;
+	.standard-gradient("../");
 	padding: 5px 7px 2px 7px;
 	min-height:17px;
 	color:@unselected-text-color;
 }
-.dj_ie6 .claro .dijitAccordionTitle {
-	background-image: none;
-}
+
 .claro .dijitAccordionContainer .dijitAccordionChildWrapper {
 	/* this extends the blue trim styling of the title bar to wrapping around the node.
 	 * done by setting margin
@@ -75,7 +71,7 @@
 	.transition-duration(.1s);
 }
 .claro .dijitAccordionInnerContainerActive .dijitAccordionTitle {
-	background-position:0 -136px;
+	.active-gradient("../");
 	color:@selected-text-color;
 }
 
@@ -87,7 +83,7 @@
 }
 .claro .dijitAccordionInnerContainerSelected .dijitAccordionTitle {
 	color:@selected-text-color;
-	background-position: 0 0;	/* avoid effect when clicking the title of the open pane */
+	.standard-gradient("../");	/* avoid effect when clicking the title of the open pane */
 }
 
 /* Hovering open or closed pane */
@@ -97,6 +93,8 @@
 	color:@hovered-text-color;
 }
 
+// TODO: why do we have any hover effect on the selected pane?
+// Since you can't click it, there shouldn't be a hover effect.
 .claro .dijitAccordionInnerContainerHover,
 .claro .dijitAccordionInnerContainerSelectedActive {
 	/* note: clicking the currently selected Accordion pane should have no effect, so treating same as hover. */
@@ -108,6 +106,6 @@
 .claro .dijitAccordionInnerContainerSelectedHover .dijitAccordionChildWrapper,
 .claro .dijitAccordionInnerContainerSelectedActive .dijitAccordionChildWrapper {
 	background-color:@pane-background-color;
-	border:1px solid @hovered-border-color !important;
+	border:1px solid @hovered-border-color;
 	.box-shadow(inset 0 0 3px rgba(0, 0, 0, .25));
 }
diff --git a/lib/dijit/themes/claro/layout/BorderContainer.css b/lib/dijit/themes/claro/layout/BorderContainer.css
index 8c0a5fa96..f00c5d1d7 100644
--- a/lib/dijit/themes/claro/layout/BorderContainer.css
+++ b/lib/dijit/themes/claro/layout/BorderContainer.css
@@ -84,26 +84,28 @@ Splitters and gutters:
   margin: 0;
 }
 /* hovered splitter */
-.claro .dijitSplitterHHover {
+.claro .dijitSplitterHHover, .claro .dijitSplitterVHover {
   font-size: 1px;
-  background: url("../layout/images/splitterHorizontalHover.png") no-repeat center top;
+  background-color: #cfe5fa;
 }
-.claro .dijitSplitterHHover .dijitSplitterThumb {
-  background: #759dc0 none;
+.claro .dijitSplitterHHover {
+  background-image: -moz-linear-gradient(left, #ffffff 0px, rgba(255, 255, 255, 0) 50%, #ffffff 100%);
+  background-image: -webkit-linear-gradient(left, #ffffff 0px, rgba(255, 255, 255, 0) 50%, #ffffff 100%);
+  background-image: -o-linear-gradient(left, #ffffff 0px, rgba(255, 255, 255, 0) 50%, #ffffff 100%);
+  background-image: linear-gradient(left, #ffffff 0px, rgba(255, 255, 255, 0) 50%, #ffffff 100%);
 }
 .claro .dijitSplitterVHover {
-  font-size: 1px;
-  background: url("../layout/images/splitterVerticalHover.png") no-repeat center left;
+  background-image: -moz-linear-gradient(top, #ffffff 0px, rgba(255, 255, 255, 0) 50%, #ffffff 100%);
+  background-image: -webkit-linear-gradient(top, #ffffff 0px, rgba(255, 255, 255, 0) 50%, #ffffff 100%);
+  background-image: -o-linear-gradient(top, #ffffff 0px, rgba(255, 255, 255, 0) 50%, #ffffff 100%);
+  background-image: linear-gradient(top, #ffffff 0px, rgba(255, 255, 255, 0) 50%, #ffffff 100%);
 }
-.claro .dijitSplitterVHover .dijitSplitterThumb {
+.claro .dijitSplitterHHover .dijitSplitterThumb, .claro .dijitSplitterVHover .dijitSplitterThumb {
   background: #759dc0 none;
 }
-.dj_ie6 .dijitSplitterHHover, .dj_ie6 .claro .dijitSplitterVHover {
-  background-color: #cfe5fa;
-  background-image: none;
-}
 /* active splitter */
 .claro .dijitSplitterHActive, .claro .dijitSplitterVActive {
   font-size: 1px;
   background-color: #abd6ff;
+  background-image: none;
 }
diff --git a/lib/dijit/themes/claro/layout/BorderContainer.less b/lib/dijit/themes/claro/layout/BorderContainer.less
index b7c672e63..f3edcd3c5 100644
--- a/lib/dijit/themes/claro/layout/BorderContainer.less
+++ b/lib/dijit/themes/claro/layout/BorderContainer.less
@@ -95,34 +95,30 @@ Splitters and gutters:
 }
 
 /* hovered splitter */
-.claro .dijitSplitterHHover {
+.claro .dijitSplitterHHover,
+.claro .dijitSplitterVHover {
 	font-size: 1px;
-	background: url("../@{image-layout-splitter-horizontal-hover}") no-repeat center top;
+	background-color: @splitter-hovered-background-color;
 }
 
-
-.claro .dijitSplitterHHover .dijitSplitterThumb {
-	background:@hovered-border-color none;
+.claro .dijitSplitterHHover {
+	.alpha-white-gradient (left, 1,0px,  0,50%, 1,100%);
 }
 
 .claro .dijitSplitterVHover {
-	font-size: 1px;
-	background: url("../@{image-layout-splitter-vertical-hover}") no-repeat center left;
+	.alpha-white-gradient (top, 1,0px,  0,50%, 1,100%);
 }
 
+.claro .dijitSplitterHHover .dijitSplitterThumb,
 .claro .dijitSplitterVHover .dijitSplitterThumb {
 	background:@hovered-border-color none;
 }
 
-.dj_ie6 .dijitSplitterHHover,
-.dj_ie6 .claro .dijitSplitterVHover {
-	background-color: @splitter-hovered-background-color;
-	background-image:none;
-}
 
 /* active splitter */
 .claro .dijitSplitterHActive,
 .claro .dijitSplitterVActive {
 	font-size: 1px;
 	background-color:@splitter-dragged-background-color;
+	background-image: none;		// color all the way across, not gradient like in hover mode
 }
diff --git a/lib/dijit/themes/claro/layout/TabContainer.css b/lib/dijit/themes/claro/layout/TabContainer.css
index 641b921ec..6db8550ec 100644
--- a/lib/dijit/themes/claro/layout/TabContainer.css
+++ b/lib/dijit/themes/claro/layout/TabContainer.css
@@ -17,18 +17,18 @@
  * 		.tabStripButtonDisabled - styles for disabled tab strip buttons
  * 
  * Tab Button:
- * 		.dijitTabContainerTop-tabs .dijitTabInnerDiv/.dijitTabContent     - styles for top tab button container
- * 		.dijitTabContainerBottom-tabs .dijitTabInnerDiv/.dijitTabContent  - styles for bottom tab button container
- * 		.dijitTabContainerLeft-tabs .dijitTabInnerDiv/.dijitTabContent    - styles for left tab button container
- * 		.dijitTabContainerRight-tabs .dijitTabInnerDiv/.dijitTabContent   - styles for right tab button container
+ * 		.dijitTabContainerTop-tabs .dijitTab     - styles for top tab button container
+ * 		.dijitTabContainerBottom-tabs .dijitTab  - styles for bottom tab button container
+ * 		.dijitTabContainerLeft-tabs .dijitTab    - styles for left tab button container
+ * 		.dijitTabContainerRight-tabs .dijitTab   - styles for right tab button container
  * 
- * 		.dijitTabContainerTop-tabs .dijitTabChecked .dijitTabInnerDiv/.dijitTabContent    
+ * 		.dijitTabContainerTop-tabs .dijitTabChecked .dijitTab
  * 				- styles for selected status of top tab button
  * 		same to Bottom, Left, Right Tabs
  * 
- * 		.dijitTabHover .dijitTabInnerDiv   - styles when mouse hover on tab buttons
- * 		.dijitTabActive .dijitTabInnerDiv  - styles when mouse down on tab buttons
- * 		.dijitTabChecked .dijitTabInnerDiv  - styles when on buttons of selected tab		
+ * 		.dijitTabHover .dijitTab   - styles when mouse hover on tab buttons
+ * 		.dijitTabActive .dijitTab  - styles when mouse down on tab buttons
+ * 		.dijitTabChecked .dijitTab  - styles when on buttons of selected tab
  * 
  * 		.dijitTabCloseButton - the close action buttons lie at the right top of each tab button on closable tabs
  * 		.dijitTabCloseButtonHover - styles when mouse hover on close action button
@@ -77,7 +77,8 @@
 
   display: none;
 }
-.claro .dijitTabInnerDiv {
+.claro .dijitTab {
+  border: 1px solid #b5bcc7;
   background-color: #efefef;
   -webkit-transition-property: background-color, border;
   -moz-transition-property: background-color, border;
@@ -87,132 +88,104 @@
   transition-duration: 0.35s;
   color: #494949;
 }
-.claro .dijitTabHover .dijitTabInnerDiv {
+.claro .dijitTabHover {
+  border-color: #759dc0;
   background-color: #abd6ff;
   -webkit-transition-duration: 0.25s;
   -moz-transition-duration: 0.25s;
   transition-duration: 0.25s;
   color: #000000;
 }
-.claro .dijitTabActive .dijitTabInnerDiv {
+.claro .dijitTabActive {
+  border-color: #759dc0;
   background-color: #7dbdfa;
   color: #000000;
   -webkit-transition-duration: 0.1s;
   -moz-transition-duration: 0.1s;
   transition-duration: 0.1s;
 }
-.claro .dijitTabChecked .dijitTabInnerDiv {
+.claro .dijitTabChecked {
+  border-color: #b5bcc7;
   background-color: #cfe5fa;
   color: #000000;
 }
-.claro .dijitTabContent {
-  border: 1px solid #b5bcc7;
-}
-.claro .dijitTabHover .dijitTabContent {
-  border-color: #759dc0;
-}
-.claro .dijitTabActive .dijitTabContent {
-  border-color: #759dc0;
-}
-.claro .dijitTabChecked .dijitTabContent {
-  color: #000000;
-  border-color: #b5bcc7;
+.claro .dijitTabDisabled {
+  background-color: #d3d3d3;
 }
-.claro .tabStripButton .dijitTabInnerDiv {
+.claro .tabStripButton {
   background-color: transparent;
-}
-.claro .tabStripButton .dijitTabContent {
   border: none;
 }
 /*** end common ***/
 /*************** top tab ***************/
 .claro .dijitTabContainerTop-tabs .dijitTab {
+  /* unselected (and not hovered/pressed) tab */
+
   top: 1px;
   /* used for overlap */
 
   margin-right: 1px;
-  padding-top: 3px;
-}
-.dj_ie7 .claro .dijitTabContainerTop-tabs .dijitTab {
-  top: 3px;
-}
-/* for top tab padding. change height when status changes */
-.claro .dijitTabContainerTop-tabs .dijitTabContent {
   padding: 3px 6px;
   border-bottom-width: 0;
-  background-image: url("../layout/images/tabTop.png");
-  background-position: 0 0;
-  background-repeat: repeat-x;
   min-width: 60px;
   text-align: center;
-}
-.claro .dijitTabContainerTop-tabs .dijitTabChecked .dijitTabContent {
-  padding-bottom: 4px;
-  padding-top: 6px;
-}
-/* normal status */
-.claro .dijitTabContainerTop-tabs .dijitTabInnerDiv {
-  background-image: url("../layout/images/tabTop.png");
-  background-position: 0 -248px;
-  background-position: bottom;
+  background-image: url("images/tabTopUnselected.png");
   background-repeat: repeat-x;
+  background-image: -moz-linear-gradient(top, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(top, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(top, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(top, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
   -webkit-box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.04);
   -moz-box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.04);
   box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.04);
 }
-/* checked status */
-.claro .dijitTabContainerTop-tabs .dijitTabChecked .dijitTabInnerDiv {
-  background-image: none;
+.claro .dijitTabContainerTop-tabs .dijitTabChecked {
+  /* selected tab */
+
+  padding-bottom: 4px;
+  padding-top: 9px;
+  background-image: url("images/tabTopSelected.png");
+  background-image: -moz-linear-gradient(top, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0) 2px, #ffffff 7px);
+  background-image: -webkit-linear-gradient(top, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0) 2px, #ffffff 7px);
+  background-image: -o-linear-gradient(top, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0) 2px, #ffffff 7px);
+  background-image: linear-gradient(top, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0) 2px, #ffffff 7px);
   -webkit-box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.05);
   -moz-box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.05);
   box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.05);
 }
-.claro .dijitTabContainerTop-tabs .dijitTabChecked .dijitTabContent {
-  background-position: 0 -102px;
-  background-repeat: repeat-x;
-}
 /** end top tab **/
 /*************** bottom tab ***************/
 .claro .dijitTabContainerBottom-tabs .dijitTab {
+  /* unselected (and not hovered/pressed) tab */
+
   top: -1px;
   /* used for overlap */
 
   margin-right: 1px;
-}
-/* calculate the position and size */
-.claro .dijitTabContainerBottom-tabs .dijitTabContent {
   padding: 3px 6px;
   border-top-width: 0;
-  background-image: url("../layout/images/tabBottom.png");
-  background-position: 0 -249px;
-  background-repeat: repeat-x;
-  background-position: bottom;
   min-width: 60px;
   text-align: center;
-}
-.claro .dijitTabContainerBottom-tabs .dijitTab {
-  padding-bottom: 3px;
-}
-/* normal status */
-.claro .dijitTabContainerBottom-tabs .dijitTabInnerDiv {
-  background-image: url("../layout/images/tabBottom.png");
-  background-position: top;
+  background-image: url("images/tabBottomUnselected.png");
   background-repeat: repeat-x;
+  background-position: bottom;
+  background-image: -moz-linear-gradient(bottom, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(bottom, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(bottom, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(bottom, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
   -webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.04);
   -moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.04);
   box-shadow: 0 1px 1px rgba(0, 0, 0, 0.04);
 }
-/* checked status */
-.claro .dijitTabContainerBottom-tabs .dijitTabChecked .dijitTabContent {
-  padding-bottom: 7px;
-  padding-top: 4px;
-  background-position: 0 -119px;
-}
+/* selected tab */
 .claro .dijitTabContainerBottom-tabs .dijitTabChecked {
-  padding-bottom: 0;
-}
-.claro .dijitTabContainerBottom-tabs .dijitTabChecked .dijitTabInnerDiv {
-  background-image: none;
+  padding-bottom: 9px;
+  padding-top: 4px;
+  background-image: url("images/tabBottomSelected.png");
+  background-image: -moz-linear-gradient(bottom, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0) 2px, #ffffff 7px);
+  background-image: -webkit-linear-gradient(bottom, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0) 2px, #ffffff 7px);
+  background-image: -o-linear-gradient(bottom, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0) 2px, #ffffff 7px);
+  background-image: linear-gradient(bottom, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0) 2px, #ffffff 7px);
   -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
   -moz-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
   box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
@@ -220,33 +193,29 @@
 /** end bottom tab **/
 /*************** left tab ***************/
 .claro .dijitTabContainerLeft-tabs .dijitTab {
-  border-right-width: 0;
+  /* unselected (and not hovered/pressed) tab */
+
   left: 1px;
   /* used for overlap */
 
   margin-bottom: 1px;
-}
-/* normal status */
-.claro .dijitTabContainerLeft-tabs .dijitTabInnerDiv {
-  background-image: url("../layout/images/tabLeft.png");
-  background-position: -347px -340px;
-  background-repeat: repeat-y;
-}
-.claro .dijitTabContainerLeft-tabs .dijitTabContent {
   padding: 3px 8px 4px 4px;
-  background-image: url("../layout/images/tabLeft.png");
+  background-image: url("images/tabLeftUnselected.png");
   background-repeat: repeat-y;
-  background-position: 0 0;
+  background-image: -moz-linear-gradient(left, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(left, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(left, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(left, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
 }
-/* checked status */
-.claro .dijitTabContainerLeft-tabs .dijitTabChecked .dijitTabContent {
+/* selected tab */
+.claro .dijitTabContainerLeft-tabs .dijitTabChecked {
+  border-right-width: 0;
   padding-right: 9px;
-  border-right: none;
-  background-image: none;
-}
-.claro .dijitTabContainerLeft-tabs .dijitTabChecked .dijitTabInnerDiv {
-  background-position: 0 -179px;
-  background-repeat: repeat-y;
+  background-image: url("images/tabLeftSelected.png");
+  background-image: -moz-linear-gradient(left, rgba(255, 255, 255, 0.5) 0px, #ffffff 30px);
+  background-image: -webkit-linear-gradient(left, rgba(255, 255, 255, 0.5) 0px, #ffffff 30px);
+  background-image: -o-linear-gradient(left, rgba(255, 255, 255, 0.5) 0px, #ffffff 30px);
+  background-image: linear-gradient(left, rgba(255, 255, 255, 0.5) 0px, #ffffff 30px);
   -webkit-box-shadow: -1px 0 2px rgba(0, 0, 0, 0.05);
   -moz-box-shadow: -1px 0 2px rgba(0, 0, 0, 0.05);
   box-shadow: -1px 0 2px rgba(0, 0, 0, 0.05);
@@ -254,51 +223,50 @@
 /** end left tab **/
 /*************** right tab ***************/
 .claro .dijitTabContainerRight-tabs .dijitTab {
-  border-left-width: 0;
+  /* unselected (and not hovered/pressed) tab */
+
   left: -1px;
   /* used for overlap */
 
   margin-bottom: 1px;
-}
-/* normal status */
-.claro .dijitTabContainerRight-tabs .dijitTabInnerDiv {
-  background-image: url("../layout/images/tabRight.png");
-  background-repeat: repeat-y;
-  background-position: -1px -347px;
-}
-.claro .dijitTabContainerRight-tabs .dijitTabContent {
   padding: 3px 8px 4px 4px;
-  background-image: url("../layout/images/tabRight.png");
-  background-position: right top;
+  background-image: url("images/tabRightUnselected.png");
   background-repeat: repeat-y;
-}
-/* checked status */
-.claro .dijitTabContainerRight-tabs .dijitTabChecked .dijitTabContent {
+  background-position: right;
+  background-image: -moz-linear-gradient(right, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(right, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(right, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(right, #ffffff 0px, #ffffff 1px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.6) 7px, rgba(255, 255, 255, 0) 100%);
+}
+.claro .dijitTabContainerRight-tabs .dijitTabChecked {
+  /* selected tab */
+
   padding-left: 5px;
-  border-left: none;
-  background-image: none;
-}
-.claro .dijitTabContainerRight-tabs .dijitTabChecked .dijitTabInnerDiv {
-  background-position: -348px -179px;
+  border-left-width: 0;
+  background-image: url("images/tabRightSelected.png");
+  background-image: -moz-linear-gradient(right, rgba(255, 255, 255, 0.5) 0px, #ffffff 30px);
+  background-image: -webkit-linear-gradient(right, rgba(255, 255, 255, 0.5) 0px, #ffffff 30px);
+  background-image: -o-linear-gradient(right, rgba(255, 255, 255, 0.5) 0px, #ffffff 30px);
+  background-image: linear-gradient(right, rgba(255, 255, 255, 0.5) 0px, #ffffff 30px);
   -webkit-box-shadow: 1px 0 2px rgba(0, 0, 0, 0.07);
   -moz-box-shadow: 1px 0 2px rgba(0, 0, 0, 0.07);
   box-shadow: 1px 0 2px rgba(0, 0, 0, 0.07);
 }
 /** end right tab **/
 /** round corner **/
-.claro .dijitTabContainerTop-tabs .dijitTabInnerDiv, .claro .dijitTabContainerTop-tabs .dijitTabContent {
+.claro .dijitTabContainerTop-tabs .dijitTab {
   -moz-border-radius: 2px 2px 0 0;
   border-radius: 2px 2px 0 0;
 }
-.claro .dijitTabContainerBottom-tabs .dijitTabInnerDiv, .claro .dijitTabContainerBottom-tabs .dijitTabContent {
+.claro .dijitTabContainerBottom-tabs .dijitTab {
   -moz-border-radius: 0 0 2px 2px;
   border-radius: 0 0 2px 2px;
 }
-.claro .dijitTabContainerLeft-tabs .dijitTabInnerDiv, .claro .dijitTabContainerLeft-tabs .dijitTabContent {
+.claro .dijitTabContainerLeft-tabs .dijitTab {
   -moz-border-radius: 2px 0 0 2px;
   border-radius: 2px 0 0 2px;
 }
-.claro .dijitTabContainerRight-tabs .dijitTabInnerDiv, .claro .dijitTabContainerRight-tabs .dijitTabContent {
+.claro .dijitTabContainerRight-tabs .dijitTab {
   -moz-border-radius: 0 2px 2px 0;
   border-radius: 0 2px 2px 0;
 }
@@ -310,15 +278,18 @@
 .claro .dijitTabListContainer-top .tabStripButton {
   padding: 4px 3px;
   margin-top: 7px;
-  background-image: url("../layout/images/tabTop.png");
-  background-position: 0 0;
+  background-image: -moz-linear-gradient(top, #ffffff 0px, rgba(255, 255, 255, 0.1) 1px, rgba(255, 255, 255, 0.6) 6px, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(top, #ffffff 0px, rgba(255, 255, 255, 0.1) 1px, rgba(255, 255, 255, 0.6) 6px, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(top, #ffffff 0px, rgba(255, 255, 255, 0.1) 1px, rgba(255, 255, 255, 0.6) 6px, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(top, #ffffff 0px, rgba(255, 255, 255, 0.1) 1px, rgba(255, 255, 255, 0.6) 6px, rgba(255, 255, 255, 0) 100%);
 }
 .claro .dijitTabListContainer-bottom .tabStripButton {
-  padding: 5px 3px;
-  margin-bottom: 4px;
-  background-image: url("../layout/images/tabTop.png");
-  background-position: 0 -248px;
-  background-position: bottom;
+  padding: 4px 3px;
+  margin-bottom: 7px;
+  background-image: -moz-linear-gradient(bottom, #ffffff 0px, rgba(255, 255, 255, 0.1) 1px, rgba(255, 255, 255, 0.6) 6px, rgba(255, 255, 255, 0) 100%);
+  background-image: -webkit-linear-gradient(bottom, #ffffff 0px, rgba(255, 255, 255, 0.1) 1px, rgba(255, 255, 255, 0.6) 6px, rgba(255, 255, 255, 0) 100%);
+  background-image: -o-linear-gradient(bottom, #ffffff 0px, rgba(255, 255, 255, 0.1) 1px, rgba(255, 255, 255, 0.6) 6px, rgba(255, 255, 255, 0) 100%);
+  background-image: linear-gradient(bottom, #ffffff 0px, rgba(255, 255, 255, 0.1) 1px, rgba(255, 255, 255, 0.6) 6px, rgba(255, 255, 255, 0) 100%);
 }
 .claro .tabStripButtonHover {
   background-color: #abd6ff;
@@ -361,10 +332,9 @@
 }
 .claro .dijitTabContainerNested .dijitTabContainerTop-tabs {
   border-bottom: solid 1px #b5bcc7;
-  padding: 1px 2px 4px;
-  margin-top: -2px;
+  padding: 2px 2px 4px;
 }
-.claro .dijitTabContainerTabListNested .dijitTabContent {
+.claro .dijitTabContainerTabListNested .dijitTab {
   background: rgba(255, 255, 255, 0) none repeat scroll 0 0;
   border: none;
   padding: 4px;
@@ -378,11 +348,7 @@
   -moz-border-radius: 2px;
   border-radius: 2px;
 }
-.claro .dijitTabContainerTabListNested .dijitTab .dijitTabInnerDiv {
-  /* 4 element selector to override box-shadow setting from above rule:
-	 *		.claro .dijitTabContainerTop-tabs .dijitTabChecked .dijitTabInnerDiv { ... }
-	 */
-
+.claro .dijitTabContainerTabListNested .dijitTab {
   background: none;
   border: none;
   top: 0;
@@ -392,7 +358,7 @@
   -moz-box-shadow: none;
   box-shadow: none;
 }
-.claro .dijitTabContainerTabListNested .dijitTabHover .dijitTabContent {
+.claro .dijitTabContainerTabListNested .dijitTabHover {
   background-color: #e5f2fe;
   border: solid 1px #cfe5fa;
   padding: 3px;
@@ -403,18 +369,21 @@
 .claro .dijitTabContainerTabListNested .dijitTabHover .tabLabel {
   text-decoration: none;
 }
-.claro .dijitTabContainerTabListNested .dijitTabActive .dijitTabContent {
+.claro .dijitTabContainerTabListNested .dijitTabActive {
   border: solid 1px #759dc0;
   padding: 3px;
-  background: #abd6ff url("../layout/images/tabNested.png") repeat-x;
+  background: #abd6ff url("images/tabNested.png") repeat-x;
+  background-image: -moz-linear-gradient(rgba(255, 255, 255, 0.61) 0%, rgba(255, 255, 255, 0) 17%, rgba(255, 255, 255, 0) 83%, rgba(255, 255, 255, 0.61) 100%);
+  background-image: -webkit-linear-gradient(rgba(255, 255, 255, 0.61) 0%, rgba(255, 255, 255, 0) 17%, rgba(255, 255, 255, 0) 83%, rgba(255, 255, 255, 0.61) 100%);
+  background-image: -o-linear-gradient(rgba(255, 255, 255, 0.61) 0%, rgba(255, 255, 255, 0) 17%, rgba(255, 255, 255, 0) 83%, rgba(255, 255, 255, 0.61) 100%);
+  background-image: linear-gradient(rgba(255, 255, 255, 0.61) 0%, rgba(255, 255, 255, 0) 17%, rgba(255, 255, 255, 0) 83%, rgba(255, 255, 255, 0.61) 100%);
   -webkit-transition-duration: 0.1s;
   -moz-transition-duration: 0.1s;
   transition-duration: 0.1s;
 }
-.claro .dijitTabContainerTabListNested .dijitTabChecked .dijitTabContent {
+.claro .dijitTabContainerTabListNested .dijitTabChecked {
   padding: 3px;
   border: solid 1px #759dc0;
-  background-position: 0 105px;
   background-color: #cfe5fa;
 }
 .claro .dijitTabContainerTabListNested .dijitTabChecked .tabLabel {
@@ -426,9 +395,6 @@
   /* prevent double border */
 
 }
-.dj_ie6 .claro .dijitTabContent,
-.dj_ie6 .claro .dijitTabInnerDiv,
-.dj_ie6 .dijitTabListContainer-top .tabStripButton,
-.dj_ie6 .dijitTabListContainer-bottom .tabStripButton {
-  background-image: none;
+.claro .dijitTab, .claro .tabStripButton {
+  _background-image: none !important;
 }
diff --git a/lib/dijit/themes/claro/layout/TabContainer.less b/lib/dijit/themes/claro/layout/TabContainer.less
index 16947ff9c..74495b209 100644
--- a/lib/dijit/themes/claro/layout/TabContainer.less
+++ b/lib/dijit/themes/claro/layout/TabContainer.less
@@ -17,18 +17,18 @@
  * 		.tabStripButtonDisabled - styles for disabled tab strip buttons
  * 
  * Tab Button:
- * 		.dijitTabContainerTop-tabs .dijitTabInnerDiv/.dijitTabContent     - styles for top tab button container
- * 		.dijitTabContainerBottom-tabs .dijitTabInnerDiv/.dijitTabContent  - styles for bottom tab button container
- * 		.dijitTabContainerLeft-tabs .dijitTabInnerDiv/.dijitTabContent    - styles for left tab button container
- * 		.dijitTabContainerRight-tabs .dijitTabInnerDiv/.dijitTabContent   - styles for right tab button container
+ * 		.dijitTabContainerTop-tabs .dijitTab     - styles for top tab button container
+ * 		.dijitTabContainerBottom-tabs .dijitTab  - styles for bottom tab button container
+ * 		.dijitTabContainerLeft-tabs .dijitTab    - styles for left tab button container
+ * 		.dijitTabContainerRight-tabs .dijitTab   - styles for right tab button container
  * 
- * 		.dijitTabContainerTop-tabs .dijitTabChecked .dijitTabInnerDiv/.dijitTabContent    
+ * 		.dijitTabContainerTop-tabs .dijitTabChecked .dijitTab
  * 				- styles for selected status of top tab button
  * 		same to Bottom, Left, Right Tabs
  * 
- * 		.dijitTabHover .dijitTabInnerDiv   - styles when mouse hover on tab buttons
- * 		.dijitTabActive .dijitTabInnerDiv  - styles when mouse down on tab buttons
- * 		.dijitTabChecked .dijitTabInnerDiv  - styles when on buttons of selected tab		
+ * 		.dijitTabHover .dijitTab   - styles when mouse hover on tab buttons
+ * 		.dijitTabActive .dijitTab  - styles when mouse down on tab buttons
+ * 		.dijitTabChecked .dijitTab  - styles when on buttons of selected tab
  * 
  * 		.dijitTabCloseButton - the close action buttons lie at the right top of each tab button on closable tabs
  * 		.dijitTabCloseButtonHover - styles when mouse hover on close action button
@@ -49,6 +49,13 @@
 
 @import "../variables";
 
+.unselected-tab-gradient (@direction) {
+    // white line, dark line, then fade from light to dark
+	.alpha-white-gradient (@direction, 1,0px, 1,1px, 0.1,2px, 0.6,7px, 0,100%);
+}
+.topBottom-selected-tab-gradient (@direction) {
+	.alpha-white-gradient (@direction, 1,0px,  1,1px, 0,2px, 1,7px);	// white line, blue line, remainder white
+}
 /*** some common features ***/
 .claro .dijitTabPaneWrapper {
 	background:@pane-background-color;
@@ -78,45 +85,37 @@
 	/* set the spacer invisible.  note that height:0 doesn't work on IE/quirks, it's still 10px. */
 	display: none;
 }
-.claro .dijitTabInnerDiv {
+.claro .dijitTab {
+	border: 1px solid @border-color;
 	background-color:@unselected-background-color;
 	.transition-property(background-color, border);
  	.transition-duration(.35s);
 	color:@unselected-text-color;
 }
-.claro .dijitTabHover .dijitTabInnerDiv {
+.claro .dijitTabHover {
+	border-color: @hovered-border-color;
 	background-color:@hovered-background-color;
  	.transition-duration(.25s);
 	color:@hovered-text-color;
 }
-.claro .dijitTabActive .dijitTabInnerDiv {
+.claro .dijitTabActive {
+	border-color: @pressed-border-color;
 	background-color:@pressed-background-color;
 	color:@selected-text-color;
 	.transition-duration(.1s);
 }
-.claro .dijitTabChecked .dijitTabInnerDiv {
-	background-color:@selected-background-color;
-	color:@selected-text-color;
-}
-
-.claro .dijitTabContent {
-	border: 1px solid @border-color;
-}
-.claro .dijitTabHover .dijitTabContent {
-	border-color: @hovered-border-color;
-}
-.claro .dijitTabActive .dijitTabContent {
-	border-color: @pressed-border-color;
-}
-.claro .dijitTabChecked .dijitTabContent {
-	color:@selected-text-color;			// todo: redundant with .claro .dijitTabChecked .dijitTabInnerDiv above?
+.claro .dijitTabChecked {
+    // selected tab
 	border-color: @border-color;			// don't use @selected-border-color because need to match border of TabContainer
+	background-color: @selected-background-color;
+	color: @selected-text-color;
+}
+.claro .dijitTabDisabled {
+	background-color: @tab-disabled-background-color;
 }
 
-.claro .tabStripButton .dijitTabInnerDiv {
+.claro .tabStripButton {
 	background-color: transparent;
-}
-.claro .tabStripButton .dijitTabContent {
 	border: none;
 }
 /*** end common ***/
@@ -124,169 +123,133 @@
 
 /*************** top tab ***************/
 .claro .dijitTabContainerTop-tabs .dijitTab {
+    /* unselected (and not hovered/pressed) tab */
 	top: 1px;	/* used for overlap */
 	margin-right: 1px;
-	padding-top: 3px;
-}
-.dj_ie7 .claro .dijitTabContainerTop-tabs .dijitTab {
-	top: 3px;
-}
-/* for top tab padding. change height when status changes */
-.claro .dijitTabContainerTop-tabs .dijitTabContent {
 	padding:3px 6px;
 	border-bottom-width: 0;
-	background-image:url("../@{image-layout-tab-top}");
-	background-position:0 0;
-	background-repeat:repeat-x;
 	min-width: 60px;
 	text-align: center;
+
+	// gradient (CSS gradient, with backup image for IE6-9)
+	background-image: url("images/tabTopUnselected.png");
+	background-repeat: repeat-x;
+	.unselected-tab-gradient(top);
+
+ 	.box-shadow(0 -1px 1px rgba(0, 0, 0, 0.04));
 }
-.claro .dijitTabContainerTop-tabs .dijitTabChecked .dijitTabContent {
+
+.claro .dijitTabContainerTop-tabs .dijitTabChecked {
+	/* selected tab */
 	padding-bottom: 4px;
-	padding-top: 6px;
-}
+	padding-top: 9px;
 
-/* normal status */
-.claro .dijitTabContainerTop-tabs .dijitTabInnerDiv {
-	background-image:url("../@{image-layout-tab-top}");
-	background-position:0 -248px;
-	background-position:bottom;
-	background-repeat:repeat-x;
-	.box-shadow(0 -1px 1px rgba(0, 0, 0, 0.04));
-}
+	// gradient (CSS gradient, with backup image for IE6-9)
+	background-image: url("images/tabTopSelected.png");
+	.topBottom-selected-tab-gradient (top);
 
-/* checked status */
-.claro .dijitTabContainerTop-tabs .dijitTabChecked .dijitTabInnerDiv {
-	background-image:none;
 	.box-shadow(0 -1px 2px rgba(0, 0, 0, 0.05));
 }
-.claro .dijitTabContainerTop-tabs .dijitTabChecked .dijitTabContent {
-	background-position:0 -102px;
-	background-repeat:repeat-x;
-}
+
 /** end top tab **/
 
 
 /*************** bottom tab ***************/
 .claro .dijitTabContainerBottom-tabs .dijitTab {
+	/* unselected (and not hovered/pressed) tab */
 	top: -1px;	/* used for overlap */
 	margin-right: 1px;
-}
-/* calculate the position and size */
-.claro .dijitTabContainerBottom-tabs .dijitTabContent {
 	padding:3px 6px;
 	border-top-width: 0;
-	background-image: url("../@{image-layout-tab-bottom}");
-	background-position:0 -249px;
-	background-repeat: repeat-x;
-	background-position:bottom;
 	min-width: 60px;
 	text-align: center;
-}
-.claro .dijitTabContainerBottom-tabs .dijitTab {
-	padding-bottom: 3px;
-}
-/* normal status */
-.claro .dijitTabContainerBottom-tabs .dijitTabInnerDiv {
-	background-image: url("../@{image-layout-tab-bottom}");
-	background-position: top;
+
+	// gradient (CSS gradient, with backup image for IE6-9)
+	background-image: url("images/tabBottomUnselected.png");
 	background-repeat: repeat-x;
+	background-position: bottom;
+	.unselected-tab-gradient(bottom);
+
 	.box-shadow(0 1px 1px rgba(0, 0, 0, 0.04));
-	
 }
 
-/* checked status */
-.claro .dijitTabContainerBottom-tabs .dijitTabChecked .dijitTabContent {
-	padding-bottom: 7px;
-	padding-top: 4px;
-	background-position:0 -119px;
-}
+/* selected tab */
 .claro .dijitTabContainerBottom-tabs .dijitTabChecked {
-	padding-bottom: 0;
-}
-.claro .dijitTabContainerBottom-tabs .dijitTabChecked .dijitTabInnerDiv {
-	background-image:none;
+	padding-bottom: 9px;
+	padding-top: 4px;
+
+	// gradient (CSS gradient, with backup image for IE6-9)
+	background-image: url("images/tabBottomSelected.png");
+	.topBottom-selected-tab-gradient (bottom);
+
 	.box-shadow(0 1px 2px rgba(0, 0, 0, 0.05));
 }
 /** end bottom tab **/
 
 /*************** left tab ***************/
 .claro .dijitTabContainerLeft-tabs .dijitTab {
-	border-right-width: 0;
+	/* unselected (and not hovered/pressed) tab */
 	left: 1px;	/* used for overlap */
 	margin-bottom: 1px;
-}
-/* normal status */
-.claro .dijitTabContainerLeft-tabs .dijitTabInnerDiv {
-	background-image: url("../@{image-layout-tab-left}");
-	background-position: -347px -340px;
-	background-repeat: repeat-y;
-}
-.claro .dijitTabContainerLeft-tabs .dijitTabContent {
 	padding:3px 8px 4px 4px;
-	background-image: url("../@{image-layout-tab-left}");
+
+	// gradient (CSS gradient, with backup image for IE6-9)
+	background-image: url("images/tabLeftUnselected.png");
 	background-repeat: repeat-y;
-	background-position:0 0;
+	.unselected-tab-gradient(left);
 }
-/* checked status */
-.claro .dijitTabContainerLeft-tabs .dijitTabChecked .dijitTabContent {
+
+/* selected tab */
+.claro .dijitTabContainerLeft-tabs .dijitTabChecked {
+	border-right-width: 0;
 	padding-right: 9px;
-	border-right: none;
-	background-image: none;
-}
-.claro .dijitTabContainerLeft-tabs .dijitTabChecked .dijitTabInnerDiv {
-	background-position:0 -179px;
-	background-repeat:repeat-y;
+
+	// gradient (CSS gradient, with backup image for IE6-9)
+	background-image: url("images/tabLeftSelected.png");
+	.alpha-white-gradient (left, 0.5,0px, 1,30px);  // 1/2 inch blue gradient, remainder white
+
 	.box-shadow(-1px 0 2px rgba(0, 0, 0, .05));
 }
 /** end left tab **/
 
 /*************** right tab ***************/
 .claro .dijitTabContainerRight-tabs .dijitTab {
-	border-left-width: 0;
+	/* unselected (and not hovered/pressed) tab */
 	left: -1px;	/* used for overlap */
 	margin-bottom: 1px;
-}
-/* normal status */
-.claro .dijitTabContainerRight-tabs .dijitTabInnerDiv {
-	background-image: url("../@{image-layout-tab-right}");
-	background-repeat: repeat-y;
-	background-position: -1px -347px;
-}
-.claro .dijitTabContainerRight-tabs .dijitTabContent {
 	padding:3px 8px 4px 4px;
-	background-image: url("../@{image-layout-tab-right}");
-	background-position:right top;
+
+	// gradient (CSS gradient, with backup image for IE6-9)
+	background-image: url("images/tabRightUnselected.png");
 	background-repeat: repeat-y;
+	background-position: right;
+	.unselected-tab-gradient(right);
 }
-/* checked status */
-.claro .dijitTabContainerRight-tabs .dijitTabChecked .dijitTabContent {
+.claro .dijitTabContainerRight-tabs .dijitTabChecked {
+	/* selected tab */
 	padding-left: 5px;
-	border-left: none;
-	background-image: none;
-}
-.claro .dijitTabContainerRight-tabs .dijitTabChecked .dijitTabInnerDiv {
-	background-position:-348px -179px;
+	border-left-width: 0;
+
+	// gradient (CSS gradient, with backup image for IE6-9)
+	background-image: url("images/tabRightSelected.png");
+	.alpha-white-gradient (right, 0.5,0px, 1,30px);	// 1/2 inch blue gradient, remainder white
+
 	.box-shadow(1px 0 2px rgba(0, 0, 0, 0.07));
 }
 /** end right tab **/
 
 /** round corner **/
-.claro .dijitTabContainerTop-tabs .dijitTabInnerDiv,
-.claro .dijitTabContainerTop-tabs .dijitTabContent {
+.claro .dijitTabContainerTop-tabs .dijitTab {
 	.border-radius(2px 2px 0 0);
 }
-.claro .dijitTabContainerBottom-tabs .dijitTabInnerDiv,
-.claro .dijitTabContainerBottom-tabs .dijitTabContent{
+.claro .dijitTabContainerBottom-tabs .dijitTab {
 	.border-radius(0 0 2px 2px);
 }
-.claro .dijitTabContainerLeft-tabs .dijitTabInnerDiv,
-.claro .dijitTabContainerLeft-tabs .dijitTabContent{
+.claro .dijitTabContainerLeft-tabs .dijitTab {
 	.border-radius(2px 0 0 2px);
 }
 
-.claro .dijitTabContainerRight-tabs .dijitTabInnerDiv,
-.claro .dijitTabContainerRight-tabs .dijitTabContent{
+.claro .dijitTabContainerRight-tabs .dijitTab {
 	.border-radius(0 2px 2px 0);
 }
 
@@ -298,15 +261,12 @@
 .claro .dijitTabListContainer-top .tabStripButton {
 	padding: 4px 3px;
 	margin-top:7px;
-	background-image: url("../@{image-layout-tab-top}");
-	background-position:0 0;
+	.alpha-white-gradient (top, 1,0px, 0.1,1px, 0.6,6px, 0,100%);	// to match unselected tab, but had to tweak numbers
 }
 .claro .dijitTabListContainer-bottom .tabStripButton {
-	padding:5px 3px;
-	margin-bottom:4px;
-	background-image: url("../@{image-layout-tab-top}");
-	background-position:0 -248px;
-	background-position:bottom;
+	padding:4px 3px;
+	margin-bottom:7px;
+	.alpha-white-gradient (bottom, 1,0px, 0.1,1px, 0.6,6px, 0,100%);	// to match unselected tab, but had to tweak numbers
 }
 .claro .tabStripButtonHover {
 	background-color:@hovered-background-color;
@@ -349,10 +309,9 @@
 }
 .claro .dijitTabContainerNested .dijitTabContainerTop-tabs {
 	border-bottom:solid 1px @border-color;
-	padding:1px 2px 4px;
-	margin-top:-2px;
+	padding:2px 2px 4px;
 }
-.claro .dijitTabContainerTabListNested .dijitTabContent {
+.claro .dijitTabContainerTabListNested .dijitTab {
 	background:rgba(255, 255, 255, 0) none repeat scroll 0 0;
 	border: none;
 	padding: 4px;
@@ -361,34 +320,35 @@
  	.transition-duration(.3s);
 	.border-radius(2px);
 }
-.claro .dijitTabContainerTabListNested .dijitTab .dijitTabInnerDiv {
-	/* 4 element selector to override box-shadow setting from above rule:
-	 *		.claro .dijitTabContainerTop-tabs .dijitTabChecked .dijitTabInnerDiv { ... }
-	 */
+.claro .dijitTabContainerTabListNested .dijitTab {
 	background: none;
 	border: none;
 	top: 0;/* to override top: 1px/-1px for normal tabs */
 	.box-shadow(none);
 }
-.claro .dijitTabContainerTabListNested .dijitTabHover .dijitTabContent {
+.claro .dijitTabContainerTabListNested .dijitTabHover {
 	background-color: @nestedtab-hovered-background-color;
 	border:solid 1px @nestedtab-hovered-border-color;
-	padding: 3px;
+	padding: 3px;	// 4px above padding - 1px compensation for border
 	.transition-duration(.2s);
 }
 .claro .dijitTabContainerTabListNested .dijitTabHover .tabLabel {
 	text-decoration: none;
 }
-.claro .dijitTabContainerTabListNested .dijitTabActive .dijitTabContent {
+.claro .dijitTabContainerTabListNested .dijitTabActive {
 	border:solid 1px @nestedtab-selected-border-color;
 	padding: 3px;
-	background: @nestedtab-selected-background-color url("../@{image-layout-tab-nested}") repeat-x;
+
+	// CSS gradient with fallback to image for IE
+	// this is in a weird place, only for active state; mailed Jason about it
+	background: @nestedtab-selected-background-color url("images/tabNested.png") repeat-x;
+	.alpha-white-gradient (0.61,0%, 0,17%, 0,83%, 0.61,100%);
+
 	.transition-duration(.1s);
 }
-.claro .dijitTabContainerTabListNested .dijitTabChecked .dijitTabContent {
+.claro .dijitTabContainerTabListNested .dijitTabChecked {
 	padding: 3px;
 	border:solid 1px @selected-border-color;
-	background-position: 0 105px;
 	background-color:@selected-background-color;
 }
 .claro .dijitTabContainerTabListNested .dijitTabChecked .tabLabel {
@@ -399,10 +359,8 @@
 	border: none;/* prevent double border */
 }
 
-
-.dj_ie6 .claro .dijitTabContent,
-.dj_ie6 .claro .dijitTabInnerDiv,
-.dj_ie6 .dijitTabListContainer-top .tabStripButton,
-.dj_ie6 .dijitTabListContainer-bottom .tabStripButton{
-	background-image: none;
+.claro .dijitTab,
+.claro .tabStripButton {
+    // IE6 can't handle background-image and background-color on same node
+	_background-image: none !important;
 }
diff --git a/lib/dijit/themes/claro/layout/TabContainer_rtl.css b/lib/dijit/themes/claro/layout/TabContainer_rtl.css
index 89fdff097..3b4d87ad3 100644
--- a/lib/dijit/themes/claro/layout/TabContainer_rtl.css
+++ b/lib/dijit/themes/claro/layout/TabContainer_rtl.css
@@ -2,66 +2,3 @@
   margin-right: 0;
   margin-left: 1px;
 }
-.claro .dijitTabRtl {
-  -moz-box-orient: horizontal;
-  text-align: right;
-}
-.dj_ie7 .claro .dijitTabRtl .dijitTabContent {
-  display: block;
-  left: 0;
-}
-.dj_ie7 .claro .dijitTabContainerTop-tabs .dijitTabRtl, .dj_ie7 .claro .dijitTabContainerTop-tabs .dijitTabCheckedRtl {
-  top: 1px;
-}
-.dj_ie7 .claro .tabStripButtonRtl .dijitButtonContents,
-.dj_ie8 .claro .tabStripButtonRtl .dijitButtonContents,
-.dj_ie6 .claro .dijitTabContainerTop-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_ie6 .claro .dijitTabContainerBottom-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_ie7 .claro .dijitTabContainerTop-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_ie7 .claro .dijitTabContainerBottom-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_iequirks .claro .dijitTabContainerTop-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_iequirks .claro .dijitTabContainerBottom-tabs .dijitTabRtl .dijitTabInnerDiv {
-  float: left;
-}
-.dj_ie6 .claro .dijitTabRtl .tabLabel,
-.dj_ie6 .claro .dijitTabContainerRight-tabs .dijitTabRtl,
-.dj_ie6 .claro .dijitTabContainerLeft-tabs .dijitTabRtl,
-.dj_ie7 .claro .dijitTabContainerRight-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_ie7 .claro .dijitTabContainerLeft-tabs .dijitTabRtl .dijitTabInnerDiv {
-  /*Make the .tablabel have width in ie6 with haslayout property, fix Close icon position bug*/
-
-  zoom: 1;
-}
-.dj_ie6 .claro .dijitTabRtl .dijitTabCloseButton, .dj_ie7 .claro .dijitTabRtl .dijitTabCloseButton, .dj_iequirks .claro .dijitTabRtl .dijitTabCloseButton {
-  margin-right: 5px;
-}
-.dj_ie6 .claro .dijitTabContainerRightRtl .dijitTabContainerRight-tabs, .dj_ie6 .claro .dijitTabContainerLeftRtl .dijitTabContainerLeft-tabs {
-  width: 1%;
-}
-.dj_ie6 .dijitTabContainerTopStrip, .dj_ie6 .dijitTabContainerBottomStrip {
-  position: absolute;
-}
-.dj_iequirks .claro .dijitTabContainerTopRtl .dijitTabContainerTopStrip {
-  padding-top: 10px;
-}
-.dj_ie7 .claro .dijitTabContainerRight-tabs .dijitTabRtlChecked .dijitTabInnerDiv {
-  background-position: -341px -179px;
-}
-.dj_ie6 .dijitTabContainerTopRtl .dijitTabStripIcon, .dj_ie6 .dijitTabContainerBottomRtl .dijitTabStripIcon {
-  position: relative;
-}
-.dj_ie6-rtl .claro .dijitTabContainerTop-tabs {
-  /* this strange rule prevents IE6 bug in themeTester.html?dir=rtl upon closing
-	 * "Closable" tab, where the other tabs disappear
-	 */
-
-  padding-left: 3px;
-}
-.dj_iequirks-rtl .claro .dijitTabListWrapper {
-  /* this strange rule prevents IE6 bug in themeTesterQuirk.html?dir=rtl upon closing
-	 * "Closable" tab, where the other tabs disappear
-	 */
-
-  border-left: 1px solid #ffffff;
-  border-right: 1px solid #ffffff;
-}
diff --git a/lib/dijit/themes/claro/layout/TabContainer_rtl.less b/lib/dijit/themes/claro/layout/TabContainer_rtl.less
index eaada0d0a..c6cec49fd 100644
--- a/lib/dijit/themes/claro/layout/TabContainer_rtl.less
+++ b/lib/dijit/themes/claro/layout/TabContainer_rtl.less
@@ -5,77 +5,3 @@
 	margin-right: 0;
 	margin-left: 1px;
 }
-.claro .dijitTabRtl {
-	-moz-box-orient:horizontal;
-	text-align: right;
-}
-.dj_ie7 .claro .dijitTabRtl .dijitTabContent {
-	display: block;
-	left: 0;
-}
-.dj_ie7 .claro .dijitTabContainerTop-tabs .dijitTabRtl,
-.dj_ie7 .claro .dijitTabContainerTop-tabs .dijitTabCheckedRtl {
-	top: 1px;
-}
-
-// Note that .tabStripButtonRtl .dijitButtonContents needed for IE8 quirks but breaks IE6 quirks
-.dj_ie7 .claro .tabStripButtonRtl .dijitButtonContents,
-.dj_ie8 .claro .tabStripButtonRtl .dijitButtonContents,
-.dj_ie6 .claro .dijitTabContainerTop-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_ie6 .claro .dijitTabContainerBottom-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_ie7 .claro .dijitTabContainerTop-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_ie7 .claro .dijitTabContainerBottom-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_iequirks .claro .dijitTabContainerTop-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_iequirks .claro .dijitTabContainerBottom-tabs .dijitTabRtl .dijitTabInnerDiv {
-	float:left;
-}
-.dj_ie6 .claro .dijitTabRtl .tabLabel,
-.dj_ie6 .claro .dijitTabContainerRight-tabs .dijitTabRtl,
-.dj_ie6 .claro .dijitTabContainerLeft-tabs .dijitTabRtl,
-.dj_ie7 .claro .dijitTabContainerRight-tabs .dijitTabRtl .dijitTabInnerDiv,
-.dj_ie7 .claro .dijitTabContainerLeft-tabs .dijitTabRtl .dijitTabInnerDiv {
-	/*Make the .tablabel have width in ie6 with haslayout property, fix Close icon position bug*/
-	zoom:1;
-}
-.dj_ie6 .claro .dijitTabRtl .dijitTabCloseButton,
-.dj_ie7 .claro .dijitTabRtl .dijitTabCloseButton,
-.dj_iequirks .claro .dijitTabRtl .dijitTabCloseButton {
-	margin-right:5px;
-}
-
-.dj_ie6 .claro .dijitTabContainerRightRtl .dijitTabContainerRight-tabs,
-.dj_ie6 .claro .dijitTabContainerLeftRtl .dijitTabContainerLeft-tabs {
-	width:1%;
-}
-
-.dj_ie6 .dijitTabContainerTopStrip,
-.dj_ie6 .dijitTabContainerBottomStrip {
-	position:absolute;
-}
-.dj_iequirks .claro .dijitTabContainerTopRtl .dijitTabContainerTopStrip {
-	padding-top: 10px;
-}
-.dj_ie7 .claro .dijitTabContainerRight-tabs .dijitTabRtlChecked .dijitTabInnerDiv {
-	background-position:-341px -179px;
-}
-
-.dj_ie6 .dijitTabContainerTopRtl .dijitTabStripIcon,
-.dj_ie6 .dijitTabContainerBottomRtl .dijitTabStripIcon {
-   position: relative;
-}
-
-
-.dj_ie6-rtl .claro .dijitTabContainerTop-tabs {	
-	/* this strange rule prevents IE6 bug in themeTester.html?dir=rtl upon closing
-	 * "Closable" tab, where the other tabs disappear
-	 */
-	padding-left: 3px;
-}
-
-.dj_iequirks-rtl .claro .dijitTabListWrapper {
-	/* this strange rule prevents IE6 bug in themeTesterQuirk.html?dir=rtl upon closing
-	 * "Closable" tab, where the other tabs disappear
-	 */
-	border-left: 1px solid @pane-background-color;
-	border-right: 1px solid @pane-background-color;
-}
diff --git a/lib/dijit/themes/claro/layout/images/accordion.png b/lib/dijit/themes/claro/layout/images/accordion.png
deleted file mode 100644
index 48181035a..000000000
--- a/lib/dijit/themes/claro/layout/images/accordion.png
+++ /dev/null
diff --git a/lib/dijit/themes/claro/layout/images/splitterHorizontalHover.png b/lib/dijit/themes/claro/layout/images/splitterHorizontalHover.png
deleted file mode 100644
index 0f5b691f6..000000000
--- a/lib/dijit/themes/claro/layout/images/splitterHorizontalHover.png
+++ /dev/null
diff --git a/lib/dijit/themes/claro/layout/images/splitterVerticalHover.png b/lib/dijit/themes/claro/layout/images/splitterVerticalHover.png
deleted file mode 100644
index 2c3c6960e..000000000
--- a/lib/dijit/themes/claro/layout/images/splitterVerticalHover.png
+++ /dev/null
diff --git a/lib/dijit/themes/claro/layout/images/tabBottom.png b/lib/dijit/themes/claro/layout/images/tabBottom.png
deleted file mode 100644
index dbcfc851b..000000000
--- a/lib/dijit/themes/claro/layout/images/tabBottom.png
+++ /dev/null
diff --git a/lib/dijit/themes/claro/layout/images/tabBottomSelected.png b/lib/dijit/themes/claro/layout/images/tabBottomSelected.png
new file mode 100644
index 000000000..f92b05f45
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabBottomSelected.png
diff --git a/lib/dijit/themes/claro/layout/images/tabBottomSelected.svg b/lib/dijit/themes/claro/layout/images/tabBottomSelected.svg
new file mode 100644
index 000000000..4e6ff6d43
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabBottomSelected.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0" ?>
+<!--
+	Source file for tabBottomSelected.png, which is used by IE7-9 for selected tabs.
+	Compile to png with batik, gimp, or online tool ex: http://www.fileformat.info/convert/image/svg2raster.htm
+
+	Output should match CSS gradient from .topBottom-selected-tab-gradient() from TabContainer.less.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="1px" height="250px" viewBox="0 0 1 250" preserveAspectRatio="none">
+	<defs>
+		<linearGradient id="gradient" gradientUnits="objectBoundingBox" x1="0%" y1="0%" x2="0%" y2="100%">
+			<stop offset="0%" stop-color="#ffffff" stop-opacity="1"/>
+			<stop offset="100%" stop-color="#ffffff" stop-opacity="0"/>
+		</linearGradient>
+	</defs>
+	<rect x="0" y="0" width="1" height="242" fill="white"/>
+	<rect x="0" y="242" width="1" height="6" fill="url(#gradient)"/>
+	<rect x="0" y="248" width="1" height="2" fill="white"/>
+</svg>
\ No newline at end of file
diff --git a/lib/dijit/themes/claro/layout/images/tabBottomUnselected.png b/lib/dijit/themes/claro/layout/images/tabBottomUnselected.png
new file mode 100644
index 000000000..7815d9cfb
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabBottomUnselected.png
diff --git a/lib/dijit/themes/claro/layout/images/tabBottomUnselected.svg b/lib/dijit/themes/claro/layout/images/tabBottomUnselected.svg
new file mode 100644
index 000000000..4193238e8
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabBottomUnselected.svg
@@ -0,0 +1,19 @@
+<?xml version="1.0" ?>
+<!--
+	Source file for tabBottomUnselected.png, which is used by IE7-9 for the selected tabs.
+	Compile to png with batik, gimp, or online tool ex: http://www.fileformat.info/convert/image/svg2raster.htm
+
+	Output should match CSS gradient from TabContainer.less.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="1px" height="16px" viewBox="0 0 1 16" preserveAspectRatio="none">
+	<defs>
+		<linearGradient id="gradient" gradientUnits="objectBoundingBox" x1="0%" y1="100%" x2="0%" y2="0%">
+			<stop offset="0%" stop-color="#ffffff" stop-opacity="1"/>
+			<stop offset="6%" stop-color="#ffffff" stop-opacity="1"/>
+			<stop offset="13%" stop-color="#ffffff" stop-opacity="0.2"/>
+			<stop offset="43%" stop-color="#ffffff" stop-opacity="0.6"/>
+			<stop offset="100%" stop-color="#ffffff" stop-opacity="0"/>
+		</linearGradient>
+	</defs>
+	<rect x="0" y="0" width="1" height="16" fill="url(#gradient)"/>
+</svg>
\ No newline at end of file
diff --git a/lib/dijit/themes/claro/layout/images/tabLeft.png b/lib/dijit/themes/claro/layout/images/tabLeft.png
deleted file mode 100644
index 8e9fcba27..000000000
--- a/lib/dijit/themes/claro/layout/images/tabLeft.png
+++ /dev/null
diff --git a/lib/dijit/themes/claro/layout/images/tabLeftSelected.png b/lib/dijit/themes/claro/layout/images/tabLeftSelected.png
new file mode 100644
index 000000000..9700afb37
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabLeftSelected.png
diff --git a/lib/dijit/themes/claro/layout/images/tabLeftSelected.svg b/lib/dijit/themes/claro/layout/images/tabLeftSelected.svg
new file mode 100644
index 000000000..12e7d8a64
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabLeftSelected.svg
@@ -0,0 +1,17 @@
+<?xml version="1.0" ?>
+<!--
+	Source file for tabLeftSelected.png, which is used by IE7-9 for selected tabs.
+	Compile to png with batik, or online tool ex: http://www.fileformat.info/convert/image/svg2raster.htm
+
+	Output should match CSS gradient from TabContainer.less.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="1000px" height="1px" viewBox="0 0 1000 1" preserveAspectRatio="none">
+	<defs>
+		<linearGradient id="gradient" gradientUnits="objectBoundingBox" x1="0%" y1="0%" x2="100%" y2="0%">
+			<stop offset="0%" stop-color="#ffffff" stop-opacity="0.5"/>
+			<stop offset="100%" stop-color="#ffffff" stop-opacity="1"/>
+		</linearGradient>
+	</defs>
+	<rect x="0" y="0" width="30" height="1" fill="url(#gradient)"/>
+	<rect x="30" y="0" width="970" height="1" fill="white"/>
+</svg>
\ No newline at end of file
diff --git a/lib/dijit/themes/claro/layout/images/tabLeftUnselected.png b/lib/dijit/themes/claro/layout/images/tabLeftUnselected.png
new file mode 100644
index 000000000..412390e08
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabLeftUnselected.png
diff --git a/lib/dijit/themes/claro/layout/images/tabLeftUnselected.svg b/lib/dijit/themes/claro/layout/images/tabLeftUnselected.svg
new file mode 100644
index 000000000..e31c211b7
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabLeftUnselected.svg
@@ -0,0 +1,16 @@
+<?xml version="1.0" ?>
+<!--
+	Source file for tabLeftUnselected.png, which is used by IE7-9 for the selected tabs.
+	Compile to png with batik, gimp, or online tool ex: http://www.fileformat.info/convert/image/svg2raster.htm
+
+	Output should match CSS gradient from TabContainer.less.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="150px" height="1px" viewBox="0 0 100 1" preserveAspectRatio="none">
+	<defs>
+		<linearGradient id="gradient" gradientUnits="objectBoundingBox" x1="0%" y1="0%" x2="100%" y2="0%">
+			<stop offset="0%" stop-color="#ffffff" stop-opacity="0.5"/>
+			<stop offset="100%" stop-color="#ffffff" stop-opacity="0"/>
+		</linearGradient>
+	</defs>
+	<rect x="0" y="0" width="150" height="1" fill="url(#gradient)"/>
+</svg>
\ No newline at end of file
diff --git a/lib/dijit/themes/claro/layout/images/tabRight.png b/lib/dijit/themes/claro/layout/images/tabRight.png
deleted file mode 100644
index 0aaae53a1..000000000
--- a/lib/dijit/themes/claro/layout/images/tabRight.png
+++ /dev/null
diff --git a/lib/dijit/themes/claro/layout/images/tabRightSelected.png b/lib/dijit/themes/claro/layout/images/tabRightSelected.png
new file mode 100644
index 000000000..1a2843499
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabRightSelected.png
diff --git a/lib/dijit/themes/claro/layout/images/tabRightSelected.svg b/lib/dijit/themes/claro/layout/images/tabRightSelected.svg
new file mode 100644
index 000000000..d8d3d674a
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabRightSelected.svg
@@ -0,0 +1,17 @@
+<?xml version="1.0" ?>
+<!--
+	Source file for tabRightSelected.png, which is used by IE7-9 for selected tabs.
+	Compile to png with batik, or online tool ex: http://www.fileformat.info/convert/image/svg2raster.htm
+
+	Output should match CSS gradient from TabContainer.less.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="1000px" height="1px" viewBox="0 0 1000 1" preserveAspectRatio="none">
+	<defs>
+		<linearGradient id="gradient" gradientUnits="objectBoundingBox" x1="100%" y1="0%" x2="0%" y2="0%">
+			<stop offset="0%" stop-color="#ffffff" stop-opacity="0.5"/>
+			<stop offset="100%" stop-color="#ffffff" stop-opacity="1"/>
+		</linearGradient>
+	</defs>
+	<rect x="0" y="0" width="970" height="1" fill="white"/>
+	<rect x="970" y="0" width="30" height="1" fill="url(#gradient)"/>
+</svg>
\ No newline at end of file
diff --git a/lib/dijit/themes/claro/layout/images/tabRightUnselected.png b/lib/dijit/themes/claro/layout/images/tabRightUnselected.png
new file mode 100644
index 000000000..2bdd00e4d
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabRightUnselected.png
diff --git a/lib/dijit/themes/claro/layout/images/tabRightUnselected.svg b/lib/dijit/themes/claro/layout/images/tabRightUnselected.svg
new file mode 100644
index 000000000..d1379a717
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabRightUnselected.svg
@@ -0,0 +1,16 @@
+<?xml version="1.0" ?>
+<!--
+	Source file for tabRightUnselected.png, which is used by IE7-9 for the selected tabs.
+	Compile to png with batik, gimp, or online tool ex: http://www.fileformat.info/convert/image/svg2raster.htm
+
+	Output should match CSS gradient from TabContainer.less.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="150px" height="1px" viewBox="0 0 100 1" preserveAspectRatio="none">
+	<defs>
+		<linearGradient id="gradient" gradientUnits="objectBoundingBox" x1="100%" y1="0%" x2="0%" y2="0%">
+			<stop offset="0%" stop-color="#ffffff" stop-opacity="0.5"/>
+			<stop offset="100%" stop-color="#ffffff" stop-opacity="0"/>
+		</linearGradient>
+	</defs>
+	<rect x="0" y="0" width="150" height="1" fill="url(#gradient)"/>
+</svg>
\ No newline at end of file
diff --git a/lib/dijit/themes/claro/layout/images/tabTop.png b/lib/dijit/themes/claro/layout/images/tabTop.png
deleted file mode 100644
index 2822487ed..000000000
--- a/lib/dijit/themes/claro/layout/images/tabTop.png
+++ /dev/null
diff --git a/lib/dijit/themes/claro/layout/images/tabTopSelected.png b/lib/dijit/themes/claro/layout/images/tabTopSelected.png
new file mode 100644
index 000000000..f4d577258
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabTopSelected.png
diff --git a/lib/dijit/themes/claro/layout/images/tabTopSelected.svg b/lib/dijit/themes/claro/layout/images/tabTopSelected.svg
new file mode 100644
index 000000000..d06e646ea
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabTopSelected.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0" ?>
+<!--
+	Source file for tabTopSelected.png, which is used by IE7-9 for the selected tabs.
+	Compile to png with batik, gimp, or online tool ex: http://www.fileformat.info/convert/image/svg2raster.htm
+
+	Output should match CSS gradient from .topBottom-selected-tab-gradient() from TabContainer.less.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="1px" height="250px" viewBox="0 0 1 250" preserveAspectRatio="none">
+	<defs>
+		<linearGradient id="gradient" gradientUnits="objectBoundingBox" x1="0%" y1="0%" x2="0%" y2="100%">
+			<stop offset="0%" stop-color="#ffffff" stop-opacity="0"/>
+			<stop offset="100%" stop-color="#ffffff" stop-opacity="1"/>
+		</linearGradient>
+	</defs>
+	<rect x="0" y="0" width="1" height="2" fill="white"/>
+	<rect x="0" y="2" width="1" height="6" fill="url(#gradient)"/>
+	<rect x="0" y="8" width="1" height="242" fill="white"/>
+</svg>
\ No newline at end of file
diff --git a/lib/dijit/themes/claro/layout/images/tabTopUnselected.png b/lib/dijit/themes/claro/layout/images/tabTopUnselected.png
new file mode 100644
index 000000000..8c34545f5
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabTopUnselected.png
diff --git a/lib/dijit/themes/claro/layout/images/tabTopUnselected.svg b/lib/dijit/themes/claro/layout/images/tabTopUnselected.svg
new file mode 100644
index 000000000..c55e92532
--- /dev/null
+++ b/lib/dijit/themes/claro/layout/images/tabTopUnselected.svg
@@ -0,0 +1,19 @@
+<?xml version="1.0" ?>
+<!--
+	Source file for tabTopUnSelected.png, which is used by IE7-9 for the selected tabs.
+	Compile to png with batik, gimp, or online tool ex: http://www.fileformat.info/convert/image/svg2raster.htm
+
+	Output should match CSS gradient from TabContainer.less.
+-->
+<svg xmlns="http://www.w3.org/2000/svg" width="1px" height="16px" viewBox="0 0 1 16" preserveAspectRatio="none">
+	<defs>
+		<linearGradient id="gradient" gradientUnits="objectBoundingBox" x1="0%" y1="0%" x2="0%" y2="100%">
+			<stop offset="0%" stop-color="#ffffff" stop-opacity="1"/>
+			<stop offset="6%" stop-color="#ffffff" stop-opacity="1"/>
+			<stop offset="13%" stop-color="#ffffff" stop-opacity="0.2"/>
+			<stop offset="43%" stop-color="#ffffff" stop-opacity="0.6"/>
+			<stop offset="100%" stop-color="#ffffff" stop-opacity="0"/>
+		</linearGradient>
+	</defs>
+	<rect x="0" y="0" width="1" height="16" fill="url(#gradient)"/>
+</svg>
\ No newline at end of file