function key(){ 
  //if(event.shiftKey){ 
  //window.close();} 
  //½ûÖ¹shift 

 

  if(event.altKey){ 
     alert('½ûÖ¹CTRL-C¸´ÖƱ¾Õ¾ÄÚÈÝ');
  } 
  //½ûÖ¹alt 

 

  if(event.ctrlKey){ 
     alert('½ûÖ¹CTRL-C¸´ÖƱ¾Õ¾ÄÚÈÝ');
  } 
  //½ûÖ¹ctrl 

 

  return false;
} 

 

  document.onkeydown=key; 

  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;
    } 
} 

 

  function Click(){ 
    alert('½ûÖ¹Õ³Ìù±¾Õ¾ÄÚÈÝ'); 
    window.event.returnValue=false; 
  } 

 

  document.oncontextmenu=Click;