is vBulletin flexable enough that you can add in coding??

for example.. one thing that would be really sweet to see is if you are in this textarea.. the "message" section... if it could use javascript or whatever to detect when the TAB key is used and space 4, instead of the default action of tabbing to the next control... because it is a huge pain when typing code in and you have to manually space things... i know you can do it in the VB IDE and copy/paste.. but not everyone always has the IDE handy.. if it is something that could be done.. i bet other members would agree it would be a nice enhancement