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<head>
<title>禁止右键练习</title>
<script language="javascript">
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function hideContextmenu()
{
window.event.returnValue=false;
}
//-->
</script>
</head>
<body oncontextmenu="hideContextmenu()">
右键单击试试～看看能否弹出菜单！
</body>
</html>