function showlx(sel)
{
		if(sel == 0)
		{
			document.getElementById("flight").style.display="block";
			document.getElementById("internal").style.display="none";
			document.getElementById("hotel").style.display="none";
			document.getElementById("trip").style.display="none";
			cximg.src="../Thems/images/img/flight_in1.gif";
		}
		if(sel == 1)
		{
			document.getElementById("flight").style.display="none";
			document.getElementById("internal").style.display="block";
			document.getElementById("hotel").style.display="none";
			document.getElementById("trip").style.display="none";
			cximg.src="../Thems/images/img/flight_in2.gif";
		}
		if(sel == 2)
		{
			document.getElementById("flight").style.display="none";
			document.getElementById("internal").style.display="none";
			document.getElementById("hotel").style.display="block";
			document.getElementById("trip").style.display="none";
			cximg.src="../Thems/images/img/flight_in3.gif";
		}
		
		if(sel == 3)
		{
			document.getElementById("flight").style.display="none";
			document.getElementById("internal").style.display="none";
			document.getElementById("hotel").style.display="none";
			document.getElementById("trip").style.display="block";
			cximg.src="../Thems/images/img/flight_in4.gif";
		}
}