// REQUIRES: prototype.js, cookiemanager.js

function stay(){

var an = navigator.appName
var ua = navigator.userAgent

  //Netscape
  var netscape = (an=="Netscape");

  //Netscape6 や Mozilla(オープンソース版)
  //     *ただしSafariがまざる
  var gecko = (ua.indexOf("Gecko")!=-1);

  //Netscape6のみ
  var n6 = (ua.indexOf("Netscape6")!=-1);

  //Netscape7のみ
  var n7 = (ua.indexOf("Netscape7")!=-1);

  //Internet Explorer
  var ie = (an=="Microsoft Internet Explorer");

  //Internet Explorer6
  var ie6 = (ua.indexOf("MSIE 6.0")!=-1);

  //Oprea6のみ
  var o6 = (ua.search('opera(\ |\/)6') != -1);

  //Oprea7のみ
  var o7 = (ua.search('opera(\ |\/)7') != -1);

  //Safariの場合
  var saf = (ua.indexOf("Safari")!=-1);

var name = "body.style.fontSize";			// クッキーの名前

var fontsize_s = "body.style.fontSize=80%";
var fontsize_m = "body.style.fontSize=100%";
var fontsize_b = "body.style.fontSize=120%";

// 発行したクッキーの取得（読み込み）

var str = document.cookie;
cookdata = str.split(";");


	if(ie){
		if((cookdata[0]) == "body.style.fontSize=80%"){
//		alert("80%だよ");
			fntS();
		}else
		if((cookdata[0]) == 'body.style.fontSize=100%'){
//		alert("100%だよ");
			fntN();
		}else
		if((cookdata[0]) == 'body.style.fontSize=120%'){
//		alert("120%だよ");
			fntB();
		}else
//		if(ie6){
//		alert(cookdata);}　//cookieない時
//		else

		fntN();
	}

	else if(saf){
		if((cookdata[0]) == 'body.style.fontSize=80%'){
//		alert("80%だよ");
			fntS();
		}else
		if((cookdata[0]) == 'body.style.fontSize=100%'){
//		alert("100%だよ");
			fntN();
		}else
		if((cookdata[0]) == 'body.style.fontSize=120%'){
//		alert("120%だよ");
			fntB();
		}else
//		alert("cookieないよ");　//cookieない時
			fntN();
	}
	else if(gecko){
		if((cookdata[0]) == 'body.style.fontSize=80%'){
//		alert("80%だよ");
			fntS();
		}else
		if((cookdata[0]) == 'body.style.fontSize=100%'){
//		alert("100%だよ");
			fntN();
		}else
		if((cookdata[0]) == 'body.style.fontSize=120%'){
//		alert("120%だよ");
			fntB();
		}else
//		alert("cookieないよ"); //cookieない時
			fntN();
	}
}


function fntS(){
		var element1 = document.getElementById("id-small");
		var element2 = document.getElementById("id-medium");
		var element3 = document.getElementById("id-large");
		element1.style.backgroundImage = 'url(/include/images/font_s_o.gif)';
		element2.style.backgroundImage = 'url(/include/images/font_n_n.gif)';
		element3.style.backgroundImage = 'url(/include/images/font_b_n.gif)';
}

function fntN(){
		var element1 = document.getElementById("id-small");
		var element2 = document.getElementById("id-medium");
		var element3 = document.getElementById("id-large");
		element1.style.backgroundImage = 'url(/include/images/font_s_n.gif)';
		element2.style.backgroundImage = 'url(/include/images/font_n_o.gif)';
		element3.style.backgroundImage = 'url(/include/images/font_b_n.gif)';
}

function fntB(){
		var element1 = document.getElementById("id-small");
		var element2 = document.getElementById("id-medium");
		var element3 = document.getElementById("id-large");
		element1.style.backgroundImage = 'url(/include/images/font_s_n.gif)';
		element2.style.backgroundImage = 'url(/include/images/font_n_n.gif)';
		element3.style.backgroundImage = 'url(/include/images/font_b_o.gif)';
}