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

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

function MenuAll(){
	if(y){
		y=0;
		MenuAllOn();
	}else{
		y=1;
		MenuAllOff();
	}
	Ygps_Image()
}

function MenuAllOn(){
	for(i=1;i<=5;i++){
		obj=document.getElementById("submenu"+i).style.visibility = "visible";
	}
}

function MenuAllOff(){
	for(i=1;i<=5;i++){
		obj=document.getElementById("submenu"+i).style.visibility = "hidden";
	}
}

function Ygps_Image(){
	if(y){
		obj=document.getElementById("menu6_head").style.backgroundImage = "url(/images/share/gnavi_ygps.gif)";
		obj=document.getElementById("menu6_head").style.backgroundPosition = "top";
	}else{
		obj=document.getElementById("menu6_head").style.backgroundImage = "url(/images/share/gnavi_ygps_active.gif)";
		obj=document.getElementById("menu6_head").style.backgroundPosition = "top";
	}
}

function Ygps_Image_hover(){
	obj=document.getElementById("menu6_head").style.backgroundPosition  = "bottom";
}

function backToTop() {
	var x1 = x2 = x3 = 0;
	var y1 = y2 = y3 = 0;
	if (document.documentElement) {
		x1 = document.documentElement.scrollLeft || 0;
		y1 = document.documentElement.scrollTop || 0;
	}
	if (document.body) {
		x2 = document.body.scrollLeft || 0;
		y2 = document.body.scrollTop || 0;
	}
	x3 = window.scrollX || 0;
	y3 = window.scrollY || 0;
	var x = Math.max(x1, Math.max(x2, x3));
	var y = Math.max(y1, Math.max(y2, y3));
	window.scrollTo(Math.floor(x / 1.4), Math.floor(y / 1.4));
	if (x > 0 || y > 0) {
		window.setTimeout("backToTop()", 10);
	}
}

function image_change(title) {
	if(title == 'medium'){
		document.getElementById("font_default").src = "/images/share/font_s.gif";
		document.getElementById("font_medium").src = "/images/share/font_m_active.gif";
		document.getElementById("font_large").src = "/images/share/font_l.gif";
	}else if(title == 'large'){
		document.getElementById("font_default").src = "/images/share/font_s.gif";
		document.getElementById("font_medium").src = "/images/share/font_m.gif";
		document.getElementById("font_large").src = "/images/share/font_l_active.gif";
	}else{
		document.getElementById("font_default").src = "/images/share/font_s_active.gif";
		document.getElementById("font_medium").src = "/images/share/font_m.gif";
		document.getElementById("font_large").src = "/images/share/font_l.gif";
	}
}

window.onload = function(r) {
	y = 1;
	image_change(font_size);
}

var	y = 1;