JS 屏蔽刷新，屏蔽右键

// 屏蔽刷新代码document.onkeydown=function(){if ((window.event.keyCode==116) || //屏蔽 F5 (window.event.keyCode==122) || //屏蔽 F11 (window.event.shiftKey && window.event.keyCode==121) //shift+F10    ){window.event.keyCode=0; window.event.returnValue=false; }if ((window.event.altKey)&&(window.event.keyCode==115)) { //屏蔽Alt+F4 window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px"); return false; }}// 屏蔽右键 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; }elseif (event.button == 2 || event.button == 3) {event.cancelBubble = true;event.returnValue = false; return false;}}document.oncontextmenu = nocontextmenu; // for IE5+ document.onmousedown = norightclick; // for all others 

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