var FONTSIZE = "";

//フォントサイズ変更
function fSize(X){
	document.getElementsByTagName('body')[0].style.fontSize=X;
	
//	alert(location.pathname);
	
	saveSIZE(X);
	
	document.getElementById("size-s-img").src = imgArray["02_off"].src;
	document.getElementById("size-m-img").src = imgArray["03_off"].src;
	document.getElementById("size-l-img").src = imgArray["04_off"].src;
	
	switch(X)
	{
		case "13px":
			document.getElementById("size-s-img").src = imgArray["02_on"].src;
			break;
			
		case "16px":
			document.getElementById("size-m-img").src = imgArray["03_on"].src;
			break;
			
		case "20px":
			document.getElementById("size-l-img").src = imgArray["04_on"].src;
			break;
			
		default:
			document.getElementById("size-s-img").src = imgArray["02_on"].src;
			break;
	}
}

//cookieの書き込み
function saveSIZE(FONT){
	var tmp = "sizetx=" + FONT + "; path=/;";
	document.cookie = tmp;

//	alert("save:" + FONT + "\n" + tmp);
}

//cookieの読み込み
//functionが無い。→自動実行
if(document.cookie!=null){
var temp = document.cookie + ';';
var POS = temp.indexOf('sizetx');
	var POSeq = temp.indexOf('=',POS)+1;
	var POSsm = temp.indexOf(';',POSeq);
	FONTSIZE = temp.substring(POSeq,POSsm);
	
//	alert("load:" + FONTSIZE + "\n" + temp);
}

//ページ読み込み時にフォントサイズセット
window.onload=function(){
	
//	alert("onload:" + FONTSIZE);
	
	if(FONTSIZE.indexOf("px") > 0){
		fSize(FONTSIZE);
	}
	else
	{
		document.getElementById("size-s-img").src = imgArray["02_on"].src;
	}
}

var imgArray = new Array();

imgArray["02_off"] = new Image();
imgArray["02_off"].src = "/img/base/fontsize_img_02.gif";
imgArray["02_on"] = new Image();
imgArray["02_on"].src = "/img/base/fontsize_img_02-on.gif";

imgArray["03_off"] = new Image();
imgArray["03_off"].src = "/img/base/fontsize_img_03.gif";
imgArray["03_on"] = new Image();
imgArray["03_on"].src = "/img/base/fontsize_img_03-on.gif";

imgArray["04_off"] = new Image();
imgArray["04_off"].src = "/img/base/fontsize_img_04.gif";
imgArray["04_on"] = new Image();
imgArray["04_on"].src = "/img/base/fontsize_img_04-on.gif";