which javascript framework do you use?

[Bagi Zoltán]

Hey everybody, I started to play with javascript not very long ago, maybe 3 or 5 months, hard to remember. Honestly I really enjoy this since with js creating a drop-down menu was possible years ago, and coding this using pure css is a huge challange. I created a three level menu some weeks ago, but for the correct display I had to implement javascript functions as well. So the drop down menu is the past of javascript, you may imagine that there is no limit for javascript nowadays. I mostly use mootools the lightweight js library to shorten the necessary time.
Which framework do you use and why?

Not really used it in any major project so far, but have been playing around with mochkit. So far looks neat, plenty of features and easy to use.