Override tabs in a HTML textarea box.

The only problem with this script, is that if you are in a large textarea, where there are scroll bars, when you hit tab, \
it scrolls to the top, try it, it really sucks!

FIX: I fixed this scroll behavior, update this topic to reflect the changes
Also added other keys, like shift+enter saves the doc...

http://blog.riait.co.uk/2007/11/04/tab-aware-textarea/