I guess it wouldn't be a problem.  Like anything else, it should be tested.

Actually, the JavaScript event handlers are part of the HTML 4.01 spec 
which is good for compatibility.

I hate the concept of needing to test the browser type.  I just try to 
avoid code that depends on a specific browser.

Mark Carruth wrote:

>I think the className property is pretty well supported by most
>browsers, and if it weren't, it shouldn't create much of a problem - if
>you wanted to make it a little more advanced, you could just write a
>function that checked the browser type before attempting to change the
>property - not difficult stuff.
>  
>