//// 文字拡大・縮小 色合い ///////////////////////////
function getCookie(){
	zoom = "";
	cName = "FontSize=";
	tmpCookie = document.cookie + ";";
	start = tmpCookie.indexOf(cName);
	if (start != -1)
	{
		end = tmpCookie.indexOf(";", start);
		zoom = tmpCookie.substring(start + cName.length, end);
		document.getElementById(target).style.fontSize = zoom;
	} else {
		document.getElementById(target).style.fontSize = "100%";
	}
	//color
	var p;
	pName = "F_Color=";
	tmpCookie = document.cookie + ";";
	start = tmpCookie.indexOf(pName);
	if (start != -1)
	{
		end = tmpCookie.indexOf(";", start);
		p = tmpCookie.substring(start + pName.length, end);
		changeCSS(p);
	}
}


//// 文字拡大・縮小 ///////////////////////////
var target = "page";	//*文字拡大・縮小対象エリア（ID名）
//
function setCookie(s){
	cName = "FontSize=";
	exp = new Date();
	exp.setTime(exp.getTime() + 31536000000);
	document.cookie = cName + s + "; path=/; expires=" + exp.toGMTString();
}
//
function textSizeUp(){
	currentSize = document.getElementById(target).style.fontSize;
	if (!currentSize) {
		currentSize = "100%";
	}
	selectSize = "";
	if ( currentSize=="100%" || currentSize=="1.0em"){
		selectSize = "120%";
	} else if(currentSize=="120%") {
		selectSize = "140%";
	} else if(currentSize=="140%") {
		selectSize = "160%";
	} else if(currentSize=="160%") {
		selectSize = "180%";
	} else if(currentSize=="180%") {
		selectSize = "200%";
	} else if(currentSize=="200%") {
		alert("これ以上文字を拡大することはできません。");
		selectSize = "200%";
	} else {
		selectSize = "100%";
	}
	document.getElementById(target).style.fontSize = selectSize;
	setCookie(selectSize);
}

function textSizeDown(){
	currentSize = document.getElementById(target).style.fontSize;
	if (!currentSize) {
		currentSize = "100%";
	}
	selectSize = "";
	if ( currentSize=="200%" || currentSize=="2.0em"){
		selectSize = "180%";
	} else if(currentSize=="180%") {
		selectSize = "160%";
	} else if(currentSize=="160%") {
		selectSize = "140%";
	} else if(currentSize=="140%") {
		selectSize = "120%";
	} else if(currentSize=="120%") {
		selectSize = "100%";
	} else if(currentSize=="100%") {
		selectSize = "80%";
	} else if(currentSize=="80%") {
		selectSize = "60%";
	} else if(currentSize=="60%") {
		selectSize = "40%";
	} else if(currentSize=="40%") {
		alert("これ以上文字を縮小することはできません。");
		selectSize = "40%";
	} else {
		selectSize = "100%";
	}
	document.getElementById(target).style.fontSize = selectSize;
	setCookie(selectSize);
}

function textSizeDefault(){
	currentSize = document.getElementById(target).style.fontSize;
	selectSize = "100%";
	document.getElementById(target).style.fontSize = selectSize;
	setCookie(selectSize);
}