function setActiveCSS(title) {
var i, a, main;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if( a.getAttribute("rel") && (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) ) {
a.disabled = true;
if(a.getAttribute("title") == title) {
a.disabled = false;
}
}
}
}

function getActiveCSS() {
var i, a;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if( a.getAttribute("rel") && (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) && !a.disabled) return a.getAttribute("title");
}
return null;
}

function getPreCSS() {
var i, a;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if ( a.getAttribute("rel") ){
if(a.getAttribute("rel").indexOf("style") != -1
&& a.getAttribute("rel").indexOf("alt") == -1
&& a.getAttribute("title")
) return a.getAttribute("title");
}
}
return null;
}

function createCookie(name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else expires = "";
document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}

function fontButtonSet() {
	if (getActiveCSS() == null) {
		var style = "medium";
	} else {
		var style = getActiveCSS();
	}
	if (document.getElementById("medium")) {
		switch(style) {
			case "small":
				buttonChange("small", "on");
				buttonChange("medium", "off");
				buttonChange("large", "off");
				break;
			case "medium":
				buttonChange("small", "off");
				buttonChange("medium", "on");
				buttonChange("large", "off");
				break;
			case "large":
				buttonChange("small", "off");
				buttonChange("medium", "off");
				buttonChange("large", "on");
				break;
		}
	}
}

function buttonChange(id, swt) {
	var a = document.getElementById(id).src;
	switch(swt) {
		case "on":
			if (a.indexOf("2.jpg") ==-1) {
				document.getElementById(id).src = a.replace(".jpg", "2.jpg");
			}
			break;
		case "off":
			document.getElementById(id).src = a.replace("2.jpg", ".jpg");
			break;
	}
}

function selectStyle(name) {
	setActiveCSS(name);
	fontButtonSet();
	return false;
}

window.onload = function(e) {
var cookie = readCookie("style");
var title = cookie ? cookie : getPreCSS();
fontButtonSet();
setActiveCSS(title);
}

window.onunload = function(e) {
var title = getActiveCSS();
createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreCSS();
fontButtonSet();
setActiveCSS(title);