在html页面禁止鼠标操作 ：
<body leftmargin="2" marginwidth="0" marginheight="0"
oncontextmenu="return false" ondragstart="return false" onselectstart="return false"
onselect="document.selection.empty()" oncopy="document.selection.empty()"
onbeforecopy="return false" onmouseup="document.selection.empty()" >