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<html>
<head>
</head>
<script>
function countme(obj,div_id,pre_id){
if(obj.value!=''){
//Ç°Ò»¸öÖµ
var preval = document.getElementById(pre_id).value;
//µ±Ç°divÖµ
var t = document.getElementById(div_id+'_value').value;
//ÏÔʾ
document.getElementById(div_id).innerHTML = parseInt(t) + parseInt(obj.value) - parseInt(preval);
//¸³Ç°Ò»¸öÖµ
document.getElementById(pre_id).value = obj.value;
//¸³µ±Ç°divÖµ
document.getElementById(div_id+'_value').value = parseInt(t) + parseInt(obj.value) - parseInt(preval);
}
}
</script>
<body>
<form>
<table colspan="1" border="1">
<tr>
<td>id1aaa</td>
<td>id2aaa</td>
<td>textaaa</td>
<td>totalaaa</td>
</tr>
<tr>
<td>id1</td>
<td>id2</td>
<td><input type="hidden" id="pre_id1_id2_text1_value" value="0"/><input type="text" on
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