JS屏蔽鼠标右键

//把如下代码放入head标签内

<!-- JS屏蔽鼠标右键 -->
<script language="JavaScript">
<!--
if (window.Event)
document.captureEvents(Event.MOUSEUP);

function nocontextmenu()
{
event.cancelBubble = true
event.returnValue = false;

return false;
}

function norightclick(e)
{
if (window.Event)
{
if (e.which == 2 || e.which == 3)
return false;
}
else
if (event.button == 2 || event.button == 3)
{
event.cancelBubble = true
event.returnValue = false;
return false;
}

}
document.oncontextmenu = nocontextmenu; //对ie5.0以上
document.onmousedown = norightclick; //对其它浏览器
//-->
</script>