var Cookie = {
	set: function(name, value, hoursToExpire) {
		var expire = '';
		if (hoursToExpire != undefined) {
			var d = new Date();
			d.setTime(d.getTime() + (3600000 * parseFloat(hoursToExpire)));//86400000ms = 1 day
			expire = '; expires=' + d.toGMTString();
		}
		return (document.cookie = escape(name) + '=' + escape(value || '') + expire + '; path=/;');
	},
	get: function(name) {
		var cookie = document.cookie.match(new RegExp('(^|;)\\s*' + escape(name) + '=([^;\\s]*)'));
		return (cookie ? unescape(cookie[2]) : null);
	},
	erase: function(name) {
		var cookie = Cookie.get(name) || true;
		Cookie.set(name, '', -1);
		return cookie;
	},
	accept: function() {
		if (typeof navigator.cookieEnabled == 'boolean') {
			return navigator.cookieEnabled;
		}
		Cookie.set('_test', '1');
		return (Cookie.erase('_test') === '1');
	}
}

var TextResizer = Class.create({
	initialize: function(options){
		this.options = $H({
			linkSelector: "div#nav_footer_utility div.column li.text_size ul li a"
		}).merge(options).toObject();
	
		var fontSize = Cookie.get("font-size") || "font_normal"; 
		$(document.body).className = fontSize;

		document.fire("text:defaultSized");
				
		$$(this.options.linkSelector).invoke("observe", "click", this.changeFontSize.bindAsEventListener(this));
	},
	changeFontSize: function(e){
		e.stop();
		var clickedLink = e.findElement("a");
		$(document.body).className = clickedLink.rel;
		Cookie.set("font-size", clickedLink.rel, 8766);
		document.fire("text:resized");
	}
});

document.observe("dom:loaded", function(){
	var textResizer = new TextResizer();
});