I most likely just made a stupid error somewhere, but i cant find it...
I just started learning javascript yesterday and i wrote the following program to find the keycodes for the keyboard

<HTML>
<HEAD>
<TITLE>
Javascript Practice
</TITLE>
<script language = "javascript" type = "text/Javascript">
<!--
document.onKeydown = keyHit();
function keyHit()
{
key = window.event.keyCode;
document.write("You pressed Keycode " + key + "<BR><BR>");
}
//-->
</script>
</HEAD>
<BODY>
</BODY>
</HTML>

might someone tell me what is wrong with it? i run internet explorer