Javascript UI Toolkit

I'm looking for a light-weight UI toolkit wri开发者_如何学Ctten in Javascript (something like Swing) but I'd rather not use ExtJS because I fear that will slow things down tremendously. Are there any small UI toolkits out there that mainly focus on layouts?

The problems I face in particular are working with layouts. A lot of toolkits come with different layout styles (Floating, Grid, Split Panes) and that is quite hard with CSS (especially heights extending 100%). It's also to be used as a framework for other developers to easily create layouts and just apply their own CSS (for themes).

Try, UKI Simple UI Kit

Have a look at http://qooxdoo.org as well.

Edited: If it's just about layout, did you consider using just a CSS framework (e. g. Blueprint)?

This is a great tool for building CSS http://compass-style.org.

You can look into one of the following

• YUI (components)
• Sproutcore (full framework)
• Cappuccino (full framework, written in Objective-j, interpreted to JS)
• Google webtoolkit (written in java, compiled to JS)

jQuery gzips its minified version to about 24k, and is as robust as you will need for that 24k. You can also link your pages to it through Google's hosting.