--- jquery.ui.dialog.js.old	2010-10-01 12:11:49.000000000 -0700
+++ jquery.ui.dialog.js	2010-10-01 12:12:12.000000000 -0700
@@ -330,10 +330,10 @@
 
 				if (event.target === last[0] && !event.shiftKey) {
 					first.focus(1);
-					return false;
+					return;
 				} else if (event.target === first[0] && event.shiftKey) {
 					last.focus(1);
-					return false;
+					return;
 				}
 			});
 		}