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<html>
<head>
<script language="javascript">
window.onload=func_a;
function func_a(){
alert("s");
var obj;
obj=document.getElementById("aaaa");
obj.innerHTML="sdf<br>";
}
</script>
</head>
<body>
<div>
<span>sdfasfas<br></span>
<span id="aaaa">qqq</span>
</div>
</body>
</html>