Index: misc/vertical-tabs-rtl.css
===================================================================
RCS file: /cvs/drupal/drupal/misc/vertical-tabs-rtl.css,v
retrieving revision 1.2
diff -u -p -F '^f' -r1.2 vertical-tabs-rtl.css
--- misc/vertical-tabs-rtl.css	19 May 2009 06:03:25 -0000	1.2
+++ misc/vertical-tabs-rtl.css	3 Oct 2010 00:56:30 -0000
@@ -1,15 +1,17 @@
 /* $Id: vertical-tabs-rtl.css,v 1.2 2009/05/19 06:03:25 dries Exp $ */
 
-.vertical-tabs {
+div.vertical-tabs {
   margin-left: 0;
   margin-right: 15em;
 }
-.vertical-tabs-list {
+
+div.vertical-tabs ul.vertical-tabs-list {
+  margin-left: 0;
   margin-right: -15em;
-  right: 0;
   float: right;
 }
-.vertical-tabs-list li.selected {
+
+div.vertical-tabs ul.vertical-tabs-list li.selected {
   border-left-width: 0;
   border-right-width: 1px;
 }
Index: misc/vertical-tabs.css
===================================================================
RCS file: /cvs/drupal/drupal/misc/vertical-tabs.css,v
retrieving revision 1.7
diff -u -p -F '^f' -r1.7 vertical-tabs.css
--- misc/vertical-tabs.css	30 Mar 2010 07:05:58 -0000	1.7
+++ misc/vertical-tabs.css	3 Oct 2010 00:56:30 -0000
@@ -1,8 +1,10 @@
 /* $Id: vertical-tabs.css,v 1.7 2010/03/30 07:05:58 webchick Exp $ */
 
 div.vertical-tabs {
-  margin: 1em 0 1em 15em;
+  margin: 1em 0 1em 15em; /* RTL */
   border: 1px solid #ccc;
+  position: relative; /* IE6/7 */
+  height: 1%; /* IE6 */
 }
 div.vertical-tabs ul.vertical-tabs-list {
   width: 15em;
@@ -11,16 +13,15 @@ div.vertical-tabs ul.vertical-tabs-list 
   border-top: 1px solid #ccc;
   padding: 0;
   position: relative; /* IE6 */
-  margin: -1px -100% -1px 0;
-  left: -15em;
-  float: left;
+  margin: -1px 0 -1px -15em; /* LTR */
+  float: left; /* LTR */
 }
-div.vertical-tabs .vertical-tabs-panes fieldset.vertical-tabs-pane {
+div.vertical-tabs fieldset.vertical-tabs-pane {
   margin: 0 !important;
   padding: 0 1em;
   border: 0;
 }
-div.vertical-tabs .vertical-tabs-panes fieldset.vertical-tabs-pane legend {
+div.vertical-tabs legend {
   display: none;
 }
 
@@ -31,14 +32,12 @@ div.vertical-tabs ul.vertical-tabs-list 
   border-top: 0;
   padding: 0;
   margin: 0;
-  height: 1%;
 }
 div.vertical-tabs ul.vertical-tabs-list li a {
   display: block;
   text-decoration: none;
   padding: 0.5em 0.6em;
-  line-height: 1.3em;
-  height: 1%;
+  line-height: 1.3;
 }
 div.vertical-tabs ul.vertical-tabs-list li a:focus strong,
 div.vertical-tabs ul.vertical-tabs-list li a:active strong,
@@ -47,7 +46,6 @@ div.vertical-tabs ul.vertical-tabs-list 
 }
 div.vertical-tabs ul.vertical-tabs-list li a:focus,
 div.vertical-tabs ul.vertical-tabs-list li a:active {
-  position: relative;
   z-index: 5;
 }
 div.vertical-tabs ul.vertical-tabs-list li a:hover {
@@ -55,8 +53,7 @@ div.vertical-tabs ul.vertical-tabs-list 
 }
 div.vertical-tabs ul.vertical-tabs-list li.selected {
   background-color: #fff;
-  border-right-width: 0;
-  position: relative;
+  border-right-width: 0; /* LTR */
 }
 div.vertical-tabs ul.vertical-tabs-list span.selected strong {
   color: #000;
@@ -68,3 +65,19 @@ div.vertical-tabs ul.vertical-tabs ul.ve
   line-height: normal;
   margin-bottom: 0;
 }
+
+/**
+ * Prevent text inputs from overflowing when container is too narrow. "width" is
+ * applied to override hardcoded cols or size attributes and used in conjunction
+ * with "box-sizing" to prevent box model issues from occuring in most browsers.
+*/
+div.vertical-tabs .form-type-textfield input {
+  width: 100%;
+  -moz-box-sizing: border-box;
+  -webkit-box-sizing: border-box;
+  box-sizing: border-box;
+}
+* html div.vertical-tabs .form-type-textfield,
+* html div.vertical-tabs .form-textarea-wrapper {
+  width: 95%; /* IE6 */
+}
Index: modules/system/system.base.css
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.base.css,v
retrieving revision 1.3
diff -u -p -F '^f' -r1.3 system.base.css
--- modules/system/system.base.css	25 Sep 2010 02:28:14 -0000	1.3
+++ modules/system/system.base.css	3 Oct 2010 00:56:34 -0000
@@ -73,6 +73,9 @@ fieldset.collapsible .fieldset-legend {
   -moz-box-sizing: border-box;
   box-sizing: border-box;
 }
+* html .form-textarea-wrapper {
+  width: 98%; /* IE6 */
+}
 .resizable-textarea .grippie {
   background: #eee url(../../misc/grippie.png) no-repeat center 2px;
   border: 1px solid #ddd;
Index: themes/bartik/css/ie6.css
===================================================================
RCS file: /cvs/drupal/drupal/themes/bartik/css/ie6.css,v
retrieving revision 1.2
diff -u -p -F '^f' -r1.2 ie6.css
--- themes/bartik/css/ie6.css	2 Sep 2010 20:43:18 -0000	1.2
+++ themes/bartik/css/ie6.css	3 Oct 2010 00:56:35 -0000
@@ -12,3 +12,6 @@
 #block-search-form .form-item-search-block-form input {
   width: 67%;
 }
+div.vertical-tabs .fieldset-wrapper {
+  padding: 0;
+}