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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>float</title>
<style type="text/css">
<!--
#apDiv1 {
position:absolute;
left:100px;
top:50px;
width:150px;
height:150px;
z-index:1;
background-color: #0000FF;
}
-->
</style>
<script language="javascript">

var x=2;
function move(){

if(document.getElementById("apDiv1").style.pixelLeft<0 ||
document.getElementById("apDiv1").style.pixelLeft > document.body.offsetWidth - 200 ){
x *= (-1);
}

document.getElementById("apDiv1").style.pixelLeft += x;

window.setTimeout("move()", 10);
}
</script>
</head>

<body onLoad="move()">

<div id="apDiv1"></div>
</body>
</html>





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