<div onselectstart="javascript:event.returnValue=false;" oncontextmenu="javascript:event.returnValue=false;" contenteditable>
<table id="test" width="770" border="3" cellspacing="0" cellpadding="0">
<tr>
<td>aaaaaa</td>
</tr>
</table>
</div>
<table id="test" width="770" border="3" cellspacing="0" cellpadding="0">
<tr>
<td>aaaaaa</td>
</tr>
</table>
</div>
<SCRIPT LANGUAGE="JScript" FOR="test" EVENT="oncontrolselect">
return false;
</SCRIPT>
<div contenteditable><table id="test" width="770" border="3" cellspacing="0" cellpadding="0" CONTENTEDITABLE="false">
<tr>
<td>aaaaaa</td>
</tr>
</table>
<div contenteditable="false">
<table id="test" width="770" border="3" cellspacing="0" cellpadding="0" CONTENTEDITABLE="false">
<tr>
<td>aaaaaa</td>
</tr>
</table>
</div></div>
</body>
</html>
<div contenteditable><table id="test" width="770" border="3" cellspacing="0" cellpadding="0">
<tr>
<td>aaaaaa</td>
</tr>
</table>
<div contenteditable="false">
<table id="test" width="770" border="3" cellspacing="0" cellpadding="0">
<tr>
<td>aaaaaa</td>
</tr>
</table>
</div></div>
</body>
</html>
<tr>
<td>aaaaaa</td>
</tr>
</table>
otest.oncontrolselect=new function(){return false;};
otest.attachEvent("oncontrolselect",new function(){return false});
这两个都不行
<SCRIPT LANGUAGE="JScript" FOR="test" EVENT="oncontrolselect">
return false;
</SCRIPT>
试过了吗?