<html>
<script language="javascript">
function ck(){
document.getElementById("t1").style.display="none"
}
function ck1(){
document.getElementById("t1").style.display=""
}
</script>
<body>
<input type="checkbox" onclick="ck()"/>
<input type="checkbox" onclick="ck1()"/>
<table id="t1">
<tr><td>aaa</td></tr>
</table>
</body>
</html>
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<tr>
<td colspan="2">
<HR color="#303591">
</td>
</tr>
<tr>
<td colspan="2">
<input type="checkbox" name="chk" onclick="if(this.checked){document.getElementById('t1').style.display=''}if(!this.checked){document.getElementById('t1').style.display='none'}" />
<font size="3"><b>：增加评价选项</b></font>
</tr>
<tr>
<td colspan="2">
<table id="t1" style="display='none'"><tr><td>123</td></tr></table>
</td>
</tr>