Friends ;-) recommended me this page to test the browser performance:
This test is especially good if one needs to test the event handling performance in the browser engine.
Browsers and platform:
Results are such: Firefox, IE - suxx, Opera - rulez.
Nevertheless, when it comes to AJAX support the result could be opposite. Check Netvibes with the browser of Your choice.
Update your browser to view this website correctly. Update my browser now