what error you got ? please post your code so that we can help you better to resolve the issue
Generally firefox handles such event in different pattern
Instead of using window.event, you should add a parameter to the function signature
see below snippet
function SearchName(txtObj,selObj,e)
{
var keyPressed;
if(window.event)
keyPressed = window.event.keyCode; // IE
else
keyPressed = e.which; // Firefox
<input type="text" name="txt1" onKeyPress="SearchName(this,selList,event)" value="<Type To Search>" onClick="javascript:this.value='';" style="width:200px;">
}
Thanks
Koolprasd2003
Editor, DotNetSpider MVM
Microsoft MVP 2014 [ASP.NET/IIS]