Code:
<html>
<head>
<script type="text/javaScript">
function setAlignment(){
var p1 = document.getElementById('2');
p1.style.topMargin = 20;
return true;
}
</script>
</head>
<body>
<div id='scroll'>
<span id="1">
set some content
</span>
<span id="2">
set some content
</p>
</div>
<input type="Button" onclick="setAlignment();" value="click"/>
</body>
</html>
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