Index: wp-admin/js/postbox.dev.js
===================================================================
--- wp-admin/js/postbox.dev.js	(revision 11963)
+++ wp-admin/js/postbox.dev.js	(working copy)
@@ -96,6 +96,10 @@
 						WebkitUserSelect: 'none',
 						KhtmlUserSelect: 'none'
 					});
+					ui.helper.css({
+						'box-shadow': '0 4px 18px rgba(0,0,0,0.6)',
+						'-moz-box-shadow': '0 4px 18px rgba(0,0,0,0.6)'
+					});
 					/*
 					if ( $.browser.msie )
 						return;