Google's JavaScript Benchmarks

Google Chrome JavaScript execution is currently the fastest. Below is the link to the benchmark suite where you can test your browser.
I currently get 1578 with Chrome 2.0.172.31 and only 130 with Firefox 3.0.11. Firefox 3.5 RC2 scores 212.
Detailed comparison below:

Google Chrome 2.0.172.31	Mozilla Firefox 3.0.11	Firefox 3.5
Richards: 1471 DeltaBlue: 1297 Crypto: 1555 RayTrace: 1841 EarleyBoyer: 2333 RegExp: 554 Splay: 3452	Richards: 111 DeltaBlue: 130 Crypto: 62.5 RayTrace: 131 EarleyBoyer: 165 RegExp: 92.3 Splay: 352	Richards: 750 DeltaBlue: 52.6 Crypto: 340 RayTrace: 154 EarleyBoyer: 186 RegExp: 132 Splay: 378

Link to the tests:
V8 Benchmark Suite

Edit: Fortunately, this week there was an announcement (what a coincidence) that Mozilla will introduce new JavaScript Just-in-Time compiler with codename TraceMonkey, to replace their current SpiderMonkey engine, that should increase JavaScript performance in Firefox 3.1 anywhere from 2 to 37 times over the previous version of the browser (3.0). Average performance improvement is calculated to be 4.6 which is on par with, if not faster than, current Google Chrome.

I have installed Firefox 3.5 RC2 and the subjective feeling of speed is greatly enhanced compared to Firefox 3.0. To turn the TraceMonkey on, read this article.

For more good news about the next generation Web, read this post.

Update 2009-07-21: Changed the Benchmark Suite link to point to the current suite version.