// JavaScript Document

// フォントサイズ
function changeFontSize(size) {
	var fontSizeSet = ['80%','100%','120%'];
	if ( size == 'N' ){
		if ( size = getCookie('fontsize') ){
			if ( isNaN(size) ){
				size = 1;
			}
		}else{
			size = 1;
		}
	}else{
		setCookie('fontsize',size);
	}
	document.getElementById('content').style.fontSize = fontSizeSet[size];
	if ( size == 0 ){
		document.getElementById('fontS').className = "fontS-select";
		document.getElementById('fontM').className = null;
		document.getElementById('fontL').className = null;
	}else if ( size == 1 ){
		document.getElementById('fontS').className = null;
		document.getElementById('fontM').className = "fontM-select";
		document.getElementById('fontL').className = null;
	}else if ( size == 2 ){
		document.getElementById('fontS').className = null;
		document.getElementById('fontM').className = null;
		document.getElementById('fontL').className = "fontL-select";
	}
}

function setCookie(Data,Value){
	life = new Date();
	life.setTime(life.getTime() + 24*60*60*1000*30);
	document.cookie = Data + "=" + escape(Value) + "; path=/; expires=" + life.toGMTString();

}

function getCookie(Data){
	var cookieArray = document.cookie.split("; ");
	for ( i=0; i<cookieArray.length; i++ ){
		var aCrumb = cookieArray[i].split("=");
		if ( Data == aCrumb[0] ){
			return unescape(aCrumb[1]);
		}
	}
	return null;
}