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<script type="text/javascript" src="js/jquery-1.4.js"></script>
<script type="text/javascript">
function a(){
var ths=$("th[id ^='tc'][id!='tcs']");
alert(ths.length);
for(var i=0;i<ths.length;i++){
alert($(ths[i]).html());
}
}
</script>
</head>
<body onload="a();">
<table>
<tr>
<th width="20" bgcolor="#08A4CD"></th>
<th id="tc1" class="theader" onclick="sortTable('name',this.id)">Name</th>
<th id="tc2" class="theader" onclick="sortTable('phone',this.id)">Mobile</th>
<th id="tc3" class="theader" onclick="sortTable('out',this.id)">Out</th>
<th id="tcs" class="theader" onclick="sortTable('in',this.id)">In</th>
<th class="white_10">Actions</th>
</tr>
</table>
</body>
$("th[id!='tc']"))