--- lightbox/js/prototype.js~	2008-03-10 06:57:43.000000000 +0200
+++ lightbox/js/prototype.js	2009-03-12 03:52:02.059829741 +0200
@@ -2969,7 +2969,7 @@
     pseudo:
 /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
     attrPresence: /^\[([\w]+)\]/,
-    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
+    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*(([\x27"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
   },
 
   // for Selector.match and Element#match