That site may work for Firefox, but it does NOT mean that it works on Mac
If you are right, that means even though a page is written in absolutely good code such that any browser can read it, it would still depend on the computer's OS?
Incidentally, since you seem a bit active in these matters , have you looked at ICICI-Prudential's Prutracker? That works superficially with various browsers but when you get down to transacting it turns out you must have enabled ActiveX in Internet Explorer on your PC running Windows. Otherwise, you're out of luck!