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<table width="500" border="1" cellspacing="0" cellpadding="0">
<tr onmouseover="ss(this)">
<td> </td>
</tr>
<tr onmouseover="ss(this)">
<td> </td>
</tr>
<tr onmouseover="ss(this)">
<td> </td>
</tr>
<tr onmouseover="ss(this)">
<td> </td>
</tr>
<tr onmouseover="ss(this)">
<td> </td>
</tr>
</table>
<script>
function ss(e){
var left=e.offsetLeft
var top=e.offsetTop
while (e=e.offsetParent) {
left += e.offsetLeft;
top += e.offsetTop;
alert("左边距:"+left+"右边距:"+top )}
};
</script>