禁止鼠标右键

    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;    }}