屏蔽鼠标右键

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if (window.Event) 
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function nocontextmenu() 
{
 event.cancelBubble = true
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}
 
function norightclick(e) 
{
 if (window.Event) 
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  if (e.which == 2 || e.which == 3)
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 else
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   event.cancelBubble = true
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}
 
document.oncontextmenu = nocontextmenu;  // for IE5+
document.onmousedown = norightclick;  // for all others
//-->
</SCRIPT>