function getCookie(){
	zoom = "";
	cName = "kankotyoWeb=";
	tmpCookie = document.cookie + ";";
	start = tmpCookie.indexOf(cName);
	if (start != -1)
	{
		end = tmpCookie.indexOf(";", start);
		zoom = tmpCookie.substring(start + cName.length, end);
		document.getElementById("containerWrap").style.fontSize = zoom;
	} else {
		document.getElementById("containerWrap").style.fontSize = "108%";
	}
}

function textSizeUp(){
	currentSize = document.getElementById("containerWrap").style.fontSize;
	selectSize = "";
	if ( currentSize == "108%" ){ /* 14px相当 */
		selectSize = "139%";
	}
	else if ( currentSize == "139%" ){ /* 18px相当 */
		selectSize = "154%";
	}
	else if ( currentSize == "154%" ){ /* 20px相当 */
		selectSize = "170%";
	}
	else if ( currentSize == "170%" ){ /* 22px相当 */
		selectSize = "185%";
	}
	else if ( currentSize == "185%" ){ /* 24px相当 */
		m = escape("これ以上文字のサイズを大きくできません。");
		alert(unescape(m));
		selectSize = "185%";
	}
	else {
		selectSize = "108%";
	}
	document.getElementById("containerWrap").style.fontSize = selectSize;
}

function textSizeReset(){
	currentSize = document.getElementById("containerWrap").style.fontSize;
	m = escape("標準文字サイズに戻しますか？");
	r = confirm(unescape(m));
	if (r) {
		currentSize = "108%";
		document.getElementById("containerWrap").style.fontSize = currentSize;
	}
}

try{
	window.addEventListener("load",getCookie,false);
}catch(e){
	window.attachEvent("onload",getCookie);
}