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;
document.onmousedown = norightclick;