ASP.NET - Below this code working IE browser but not working in Firebox

Page_load()
{
txtGroupCode.Attributes.Add("onkeypress", "return RestrictSpecialCharsBC('txtGroupCode',10);");
}

this code working IE browser calling javascript but not working firebox.. i need to work firebox.

Any body know pls rly

Advance thanks.

Is this function getting fired at all?

RestrictSpecialCharsBC

I tried your code and it works fine in Firefox. So you have something else happening there, perhaps the function signature and what is being passed to it.  You can hit CTRL-SHIFT-K in Firefox to bring up the developer console and see if there are any javascript errors.