<script>

/*

*屏蔽 F5、Ctrl+N、Shift+F10、Alt+F4

*如果想要屏蔽其他键，则找到对应的 keyCode 再依照此方法即可

*/

document.onkeydown = function(event){

event = window.event || event;

if(event.keyCode==116 || (event.ctrlKey && event.keyCode==78) || (event.shiftKey && event.keyCode==121) || (event.altKey && event.keyCode==115)){

event.keyCode =0;

event.returnvalue = false;

}

}

/** 屏蔽鼠标右键 */

document.oncontextmenu = function(){return false;}

//或者

document.onmousedown = function(event){

event = window.event || event;

if(document.all && event.button == 2) {

event.returnvalue=false;

}

}



/** 屏蔽选中网页内容 */

document.onselectstart=function(){return false;}

/** 屏蔽复制网页内容 */

document.body.oncopy = function(){return false;}

/** 屏蔽剪切网页内容 */

document.body.oncut = function(){return false;}

/** 屏蔽向网页粘贴内容 */

document.body.onpaste = function(){return false;}



</script>