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<html>
<head>
<title>
TD Testing !
</title>
</head>
<script language="javascript">
function getPos()
{
var p=document.getElementById("p1");
var r=document.selection.createRange();
var txt=r.text;
alert("选择的文本所在位置为:"+(p.innerText.indexOf(txt)+1));
}
</script>
<BODY>
<p id='p1'>fffffffffajflafljljfldfjldfjdlfjdjllllllllllllllllljfelf
jelfjjjjjjjjjjjjjjjj</p>
<button onclick="getPos()">位置</button>
</BODY>
</html>