js屏蔽浏览器（IE和FireFox）的刷新和右键等功能

一，js屏蔽浏览器（IE和FireFox）的刷新功能

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+F4window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");return false;}} 

 

二，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; } else if (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