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+F4

window.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