diff -r 2f6f6f7551ca -r 32102edaa81b web/wp-includes/js/thickbox/thickbox.css
--- a/web/wp-includes/js/thickbox/thickbox.css	Thu Sep 16 15:45:36 2010 +0000
+++ b/web/wp-includes/js/thickbox/thickbox.css	Mon Nov 19 18:26:13 2012 +0100
@@ -49,7 +49,7 @@
 	background: #ffffff;
 	z-index: 102;
 	color:#000000;
-	display:none;
+	visibility: hidden;
 	text-align:left;
 	top:50%;
 	left:50%;