There is plenty ofo different javascript framework out there. If you haven’t used one before, and you are dealing with javascript very often you better try cause you won’t regret it. Particulary usefull for fancy stuff, animation and Ajax.

Here is a quick overview of the most popular javascript framework. I don’t think one is really better than an other. They all have pretty much the same abilities and it’s up to your coding style really.

Prototype

Mootools

JQuery

Dojo

All of them have plug-ins to enhance their existing functionalities. I would recommend for novice JQuery or Mootools, which are the one I use most of the time.

(Please Prototype Team, do something for this div not closed on your front page it is the only error you’ve got…)