// JavaScript Document

/*
Author: Alex Boyce
Copyright: 2010
Date: 3/5/10

Creative Commons License
*/

(function($) {
	$.fn.textSize = function(options) {
		var defaultSettings = {
			target: "body",
			controls: [".a1", ".a2", ".a3"],
			sizes: ["90%", "105%", "120%"],
			cookieName: "tsize"
		},
		settings = $.extend({}, defaultSettings, options),
		parentControl = this;
		
		$(settings.controls).each(function (i) {
			$(settings.controls[i], parentControl).click(function(event) {
				event.preventDefault();
				$(settings.target).css({fontSize: settings.sizes[i]});
				setCookie(settings.cookieName, settings.sizes[i], 1);
				});
			});
		
		function setCookie(c_name,value,expiredays)
			{
				var exdate=new Date();
				exdate.setDate(exdate.getDate()+expiredays);
				document.cookie=c_name+ "=" +escape(value)+
				((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
			}
			
		this.loadSize = function()
			{
				c_name = settings.cookieName;
				if (document.cookie.length>0)
				  {
				  c_start=document.cookie.indexOf(c_name + "=");
				  if (c_start!=-1)
					{
					c_start=c_start + c_name.length+1;
					c_end=document.cookie.indexOf(";",c_start);
					if (c_end==-1) c_end=document.cookie.length;
						$(settings.target).css({fontSize: unescape(document.cookie.substring(c_start,c_end))});
					}
				  }				
			}
			
		return this;
		}	
	})(jQuery);