Complex JavaScript web page to examine internet browsers efficiency?

I have 3 various internet browsers I intend to contrast : Mozilla Firefox, Google Chrome, and also Safari.

I do not require really innovative device ; it can merely open a page and also provide.

I attempted Gmail, Google Docs, and also others, yet it feels like they do a wonderful work on both, the internet browser and also the web page due to the fact that every little thing is under a 2nd.

Does any person have a link where I can examine browser efficiency (not always network band size or browser making, as in http://acid3.acidtests.org/)

I presume a web page with lots of JavaScript remains in order.

Do you have one?

EDIT

Heheh this is my effort: P Obviously there should be a far better means:

<script>
    //.... ahh forget it. 
</script>
<input type="button" value="Start" onClick="testIt();"/>