HTML屏蔽F12和右鍵

//屏蔽F12和右鍵
/*  function click(e) {
 if (document.all) {
 if (event.button==2||event.button==3) { alert("歡迎光臨寒舍，有什麼須要幫忙的話，請與站長聯繫！謝謝您的合做！！！");
oncontextmenu='return false';
 }
 }
 if (document.layers) {
 if (e.which == 3) {
 oncontextmenu='return false';
 }
 }
 }
 if (document.layers) {
 document.captureEvents(Event.MOUSEDOWN);
 }
 document.onmousedown=click;
 document.oncontextmenu = new Function("return false;")

document.onkeydown =document.onkeyup = document.onkeypress=function(){ 
 if(window.event.keyCode == 123) { 
 window.event.returnValue=false;
 return(false); 
 } 
 } */
//屏蔽F12和右鍵