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;