function right() 
	{
	    if (window.event.button == 2 || window.event.button == 3)
	    {
	    	alert("谢谢光临中学化学资源网!");
	        //window.status="中学化学资源网";
	        return false;
	    }
	   return false;
	}
	document.body.onmousedown=right
	
	function myKeyDown()
	{
	   if( event.keyCode==17 || event.keyCode==18 )
	   {
	      //alert("谢谢光临中学化学资源网!");
	      return false
	   }
	}
	window.document.onkeydown = myKeyDown;
	
	function NoRight(){return false} 
	document.body.oncontextmenu=NoRight
	document.body.onselectstart=NoRight