// サブメニュー表示
function Setimg(obj,ImgName) {
	obj.src = ImgName;
}

function MenuOn(x){
	obj=document.getElementById("submenu"+x)
			.style.visibility="visible";
	}

function MenuOff(x){
	obj=document.getElementById("submenu"+x)
			.style.visibility="hidden";
	}