Keycodes Not Working In Mozilla With Javascript

I have code in javascript which get keycodes of different keys and set it to hidden field. Hidden field is then manipulated by server side code. My code is: function TriggeredKey(e

Solution 1:

functionTriggeredKey(e) {
   e = e || window.event;
   var keycode;
   if (window.event){
       //this check fails in mozilla///so the variable keycode is undefined
       keycode = event.which ? window.event.which : window.event.keyCode;
   }
   if(!keycode){keycode = e.which}
   //solves the issuealert(keycode);
   document.getElementById("<%=hdfkey.ClientID %>").value = keycode;
  _dopostback();
}

Fiddle

Check the fiddle in mozilla

Fiddle result