Key Code Check

<script type="text/javascript">
<!--
document.onkeydown = KeyCode;

function KeyCode()
{
    if(document.all)
        kcode = event.keyCode;
    else if(document.getElementById)
        kcode = (event.keyCode)? event.keyCode: event.charCode;
    else if(document.layers)
        kcode = event.which;
    window.alert("KeyCode=" + kcode.toString(16));
}
// -->
</script>
</head>

<script type="text/javascript">
<!--
document.onkeydown = KeyCode;

function KeyCode()
{   ・・・   }