Onkeypress fang taste kombination

<html>
<head>
<body onkeydown="savekey(event.keyCode)" onkeyup="removekey(event.keyCode)">

<script type="text/javascript">
var aKeys=[0,0,0];
function savekey(i){
    if(aKeys[aKeys.length-1]!=i){
        removekey(i);
        if(aKeys.length==3)aKeys.shift();
        aKeys.push(i);
    }

    var s=","+aKeys.toString();

    if(s.indexOf(",16")>-1&&s.indexOf(",17")>-1&&s.indexOf(",82")>-1){
        document.getElementById("test").innerHTML+="Udfør kommando!<br>";
    }
}

function removekey(i){
    for(var j=0;j<aKeys.length;j++)if(aKeys[j]==i)aKeys[j]=0
}
</script>

<div id="test"></div>

Måske i stedet:

<script type="text/javascript">
function doSomething(key){
  alert("Key " + key + " was pressed width Shift + Ctrl-keys !-)");
}
window.onkeydown = function(e){
  e = e ? e : window.event;
  if(e.ctrlKey && e.shiftKey)
    doSomething(e.keyCode);
}
</script>

Hmm. Ja, det trick kendte jeg ikke. =)