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;