JavaScript - otwarcie okna na pełny ekran

Otwarcie okna na pełnym ekranie z poziomu JavaScript:

<script language="JavaScript" type="text/javascript">
<!--
function fullwin(where){
   var newwin = window.open(where,"newwin",'fullscreen=yes,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=' + screen.width + ',height=' + screen.height);
   newwin.moveTo(0,0);newwin.focus();
}
//-->
</script>


where - adres url