XUL/theme simplification changes - removing unnecessary boxes and re-writing large portions of the themes to use new -moz-border-colors and -moz-image-region css features. Also cleans up the classic skin quite a bit for both mac and win. Fixes bugs 113024, 113043, 113585, 113586, 115943, 113643, 114475, 99787, 110214, 113977, 113966, 114802, 64894, 90724, 103173, 103199, 103298, 110442, 111472, 111989, 113027, 113041, 109180, 109204, 81581, 81903, 103324, 110108, 114540, and probably more I forgot to mention. r=ben, sr=hyatt

themes/classic/navigator/mac/tabbrowser.css

@@ -1,7 +1,22 @@
 
 @namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
 
-.tab-image {
+.tabbrowser-strip {
+  padding-bottom: 3px;
+  border-bottom: 2px solid;
+  -moz-border-bottom-colors: ThreeDDarkShadow ThreeDShadow;
+}
+
+.tabbrowser-tabs {
+  padding-top: 1px;
+}
+
+.tabs-left,
+.tabs-right {
+  width: 3px;
+}
+
+.tab-icon {
   margin-top: 1px;
   margin-right: 3px;
   width: 16px;
@@ -9,13 +24,18 @@
   list-style-image: url("chrome://communicator/skin/bookmarks/bookmark-item.gif"); 
 }
 
-tab[busy] > .tab-box > .tab-image {
+tab[busy] > .tab-icon {
   list-style-image: url("chrome://global/skin/loading.gif");
 }
 
-.tabbrowser-closebox {
-  list-style-image: url("chrome://global/skin/closebox.gif");
-  margin-bottom: 3px;
-  margin-right: 2px;
-  margin-left: 4px;
+/* ::::: close button ::::: */
+
+.tabs-closebutton {
+  margin: 3px;
+  list-style-image: url("chrome://global/skin/icons/close-button.gif");
 }
+
+.tabs-closebutton > .toolbarbutton-icon {
+  margin: 0;
+}
+

themes/classic/navigator/win/tabbrowser.css

@@ -1,7 +1,22 @@
 
 @namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
 
-.tab-image {
+.tabbrowser-strip {
+  padding-bottom: 3px;
+  border-bottom: 2px solid;
+  -moz-border-bottom-colors: ThreeDDarkShadow ThreeDShadow;
+}
+
+.tabbrowser-tabs {
+  padding-top: 1px;
+}
+
+.tabs-left,
+.tabs-right {
+  width: 3px;
+}
+
+.tab-icon {
   margin-top: 1px;
   margin-right: 3px;
   width: 16px;
@@ -9,13 +24,18 @@
   list-style-image: url("chrome://communicator/skin/bookmarks/bookmark-item.gif"); 
 }
 
-tab[busy] > .tab-box > .tab-image {
+tab[busy] > .tab-icon {
   list-style-image: url("chrome://global/skin/loading.gif");
 }
 
-.tabbrowser-closebox {
-  list-style-image: url("chrome://global/skin/closebox.gif");
-  margin-bottom: 3px;
-  margin-right: 2px;
-  margin-left: 4px;
+/* ::::: close button ::::: */
+
+.tabs-closebutton {
+  margin: 3px;
+  list-style-image: url("chrome://global/skin/icons/close-button.gif");
 }
+
+.tabs-closebutton > .toolbarbutton-icon {
+  margin: 0;
+}
+