web页中屏蔽选中、剪切、复制及右键菜单
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY oncontextmenu="return false;" onselectstart="return false;"
oncut="return false;" oncopy="return false;">
this is test
</BODY>
</HTML>
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