Update: JavaScript-beautifier bookmarklet – now works on selected text too
Updated my bookmarklet which does syntax highlighting and coloring (based on 2 other scripts). It now supports coloring of selected text which should come in handy, for example in forum posts like these:

Try it out yourself on these posts, just select the code text and fire the bookmarklet:
http://www.codetoad.com/forum/15_28462.asp
http://www.extjs.com/forum/showthread.php?p=392611#post392611
The source for the bookmarklet can be found in the Ext forums:
http://www.extjs.com/forum/showthread.php?p=393025#post393025
Enjoy!
It’s broken man. There is some trash in the code, but even after removing from beginning and tail it does not work.
Posting code on wordpress is a sad story. Try grabbing the source from here instead:
http://www.extjs.com/forum/showthread.php?p=393025#post393025
Great bookmarklet. Thanks.