validation in asp

[jats]

Hi,
i am giving validation in my asp page on the onkeypress ="return zipcode(this)" of textarea

function zipcode(e)
{
var keycode;

if (window.event) keycode = window.event.keyCode;
else if (event) keycode = event.keyCode;

else if (e) keycode = e.which;

else return true;if( (keycode >= 65 && keycode <= 90) || (keycode >= 97 && keycode <= 122)||(keycode == 96)||(keycode == 39)||(keycode >= 48 && keycode <= 57))
{
return true;
}
else

{
return false;

}
return true;
}

its running good in Internet explorer.
but it is not working in FIREFOX

any Suggestion , or experience with this kind of problem

thanks in advance

[DrBunchman]

Hi jats,

FireBug is a great FireFox add on which enables you to debug Javascript. I'd suggest downloading it and using it to try and debug your code.

Let me know how it goes.

Dr B