Functional Testing

Functional Testing

Hi. We use UI at our organization and have modified and created a bunch of new UI widgets for our use. We have what was originally unit tests done in Qunit, but it has evolved mostly into functional tests.

My experience is that you can use Qunit for functional tests, but eventually you will encounter a lot of complexity and timing issues when trying to simulate user interactions.

I am thinking that Qunit is not really suited to heavy duty functional tests. Correct? If so can anyone offer suggestions as what to use? We need tests in Windows/Mac and in:
IE6,7,8
FF 2x-3x
Safari

Any input is appreciated. Thanks..