Index: style.css
===================================================================
RCS file: /cvs/drupal/drupal/themes/garland/style.css,v
retrieving revision 1.5
diff -u -r1.5 style.css
--- style.css	12 Nov 2006 17:25:45 -0000	1.5
+++ style.css	26 Nov 2006 17:07:23 -0000
@@ -766,6 +766,10 @@
   background: url("images/menu-collapsed.gif") no-repeat 0% 50%;
 }
 
+html.js .collapsible select {
+  width:100%;
+}
+
 /**
  * Syndication Block
  */