<head>
<script language="JavaScript"> function function1(){
myDiv.style.posBottom = 500;
}
</script>
</head>
<body>
<div id="myDiv"
style="background-color:#ccffcc;
position:absolute;
width:200;
cursor:hand";
onclick="function1()">
Click your mouse to set the posBottom to 500.
</div>
</body>