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<script language="javascript">
function chg()
{
this.form1.je.value=this.form1.sl.value * this.form1.dj.value;
}
</script>
<form METHOD=POST ACTION="" name="form1">
<table>
<tr>
<td width="87"> <div align="center">销售数量 </div> </td>
<td width="95"> <div align="center">单价 </div> </td>
<td width="96"> <div align="center">销售金额 </div> </td>
<tr>
<td> <input name="sl" type="text" id="sl" size="10" onchange="javascript:chg();" />
</td>
<td> <input name="dj" type="text" id="dj" size="10" onchange="javascript:chg();" />
¥ </td>
<td> <input name="je" type="text" id="je" size="10" disabled />
¥ </td>
</tr>
</table> </form>