function showlx(sel)
{
		if(sel == 0)
		{
			document.getElementById("flight").style.display="block";
			document.getElementById("hotel").style.display="none";
			cximg.src="Thems/Images/image/flight_menu1.jpg";
		}
		if(sel == 1)
		{
			document.getElementById("flight").style.display="none";
			document.getElementById("hotel").style.display="block";
			cximg.src="Thems/Images/image/flight_menu2.jpg";
		}
		}