update thumbnails to keep images from going past edges of thumbnails

bootstrap.css

@@ -6,7 +6,7 @@
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Designed and built with all the love in the world @twitter by @mdo and @fat.
- * Date: Wed Dec 21 16:26:02 CST 2011
+ * Date: Wed Dec 21 18:20:33 CST 2011
  */
 html, body {
   margin: 0;
@@ -2615,6 +2615,7 @@ button.btn::-moz-focus-inner, input[type=submit].btn::-moz-focus-inner {
 }
 .thumbnail {
   display: block;
+  padding: 4px;
   line-height: 1;
   border: 1px solid #ddd;
   -webkit-border-radius: 4px;
@@ -2632,7 +2633,7 @@ a.thumbnail:hover {
 }
 .thumbnail > img {
   display: block;
-  margin: 4px;
+  max-width: 100%;
 }
 .thumbnail .caption {
   padding: 9px;