function showMenu(num){
	for(var i=1;i<=4;i++){
		if(i==num){
			document.getElementById("nav"+i).style.backgroundImage="url(/template/images/meun-2.gif)";
			document.getElementById("menu"+i).style.display="block";
		} else {
			document.getElementById("nav"+i).style.backgroundImage="url(/template/images/menu2.gif)";
			document.getElementById("menu"+i).style.display="none";
		}
	}
}
function hideMenu(){
	for(var i=1;i<=4;i++){
		document.getElementById("nav"+i).style.backgroundImage="url(/template/images/menu2.gif)";
		document.getElementById("menu"+i).style.display="none";
	}
}
function changeClass(num) {
	for(var i=1;i<= 5;i++) {
		if(i==num){
			document.getElementById("fl"+i).className="cfl";
			document.getElementById("p"+i).style.display="block";
		} else {
			document.getElementById("fl"+i).className="fl";
			document.getElementById("p"+i).style.display="none";
		}
	}
}