function getCookie(theName){
        theName += "=";
        theCookie = document.cookie+";";
        start = theCookie.indexOf(theName);
        if(start != -1){
                end = theCookie.indexOf(";",start);
                return unescape(theCookie.substring(start+theName.length,end));
        }
        return false;
}

function setCookie(theName,theValue,theDay)
{
        if ((theName != null) && (theValue != null))
        {
                expDay = "Wed, 01 Jan 2020 18:56:35 GMT";       // 沒有指定的話就是2020年
                if (theDay != null)
                {
                        theDay = eval(theDay);  // 字串也轉為數字（慎重起見）
                        setDay = new Date();
                        setDay.setTime(setDay.getTime()+(theDay*1000*60*60*24));
                        expDay = setDay.toGMTString();
                }
                document.cookie = theName + "="+escape(theValue)+";expires="+expDay;
                return true;
        }
        return false;
}

function load_css(){
	viewsize = getCookie("viewsize");
	if(viewsize == "bigfont"){
		if(document.getElementById("artCss")!=null)
			document.getElementById("artCss").href="/docStyle/css/article_bigfont.css";
		if(document.getElementById("indexCss")!=null)
		   	document.getElementById("indexCss").href="css/index_bigfont.css";
		if(document.getElementById("menuCss")!=null)
			document.getElementById("menuCss").href="menu/menuC_bigfont.css";
	}
}

function changeFont(){
	viewsize = getCookie("viewsize");
	if(viewsize == "bigfont"){
		setCookie("viewsize","normal",1);
		viewsize = "normal";
	}else{
		setCookie("viewsize","bigfont",1);
		viewsize = "bigfont";
	}
	
	load_css();
}

function showSetFontLink(){
	viewsize = getCookie("viewsize");
//	fontlink = document.getElementById("fontlink");
//	if(fontlink!=null){
		if(viewsize == "bigfont"){
			document.write("正常字體版");
		}else{
			document.write("字體放大版");
		}
	//}
	
}