codice:
<script type="text/javascript">
function controllo(e){
	if(!e) e=window.event;
	var keyC=(e.which)?e.which:e.keyCode;
	if(keyC==49){alert('hai premuto 1');self.location.href='http://www.html.it';}
}
</script>
<form>
<input type="text" onkeyup="controllo(event)">
</form>