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;    
 function disableselect(e){ 
return false 
} 
function reEnable(){ 
return true 
} 
document.onselectstart=new Function ("return false") 
if (window.sidebar){ 
document.onmousedown=disableselect 
document.onclick=reEnable 
}