diff -r c75ad574b56d -r 8a00247d1dee includes/clientside/static/ajax.js
--- a/includes/clientside/static/ajax.js	Sat Oct 27 13:54:44 2007 -0400
+++ b/includes/clientside/static/ajax.js	Sun Oct 28 14:32:13 2007 -0400
@@ -1192,6 +1192,7 @@
   mydiv.style.position = 'absolute';
   mydiv.style.top = '0px';
   mydiv.id = 'autoCaptcha';
+  mydiv.style.zIndex = String( getHighestZ() + 1 );
   var img = document.createElement('img');
   img.onload = function()
   {