var Spry; if (!Spry) Spry = {}; if (!Spry.Utils) Spry.Utils = {};

// We need an unload listener so we can store the data when the user leaves the page
// SpryDOMUtils.js only provides us with a load listener so we create this function

Spry.Utils.addUnLoadListener = function(handler /* function */)
{ 
	if (typeof window.addEventListener != 'undefined')
		window.addEventListener('unload', handler, false);
	else if (typeof document.addEventListener != 'undefined')
		document.addEventListener('unload', handler, false);
	else if (typeof window.attachEvent != 'undefined')		
		window.attachEvent('onunload', handler);
};

Spry.Utils.Cookie = function(type /* string*/, name /* string */, value /* string or number */, options /* object */){
	var	name = name + '=';
		
	if(type == 'create'){
		// start cookie string creation
		var str = name + value;
		
		// check if we have options to add
		if(options){
			// convert days and create an expire setting
			if(options.days){
				var date = new Date();
				str += '; expires=' + (date.setTime(date.getTime() + (options.days * 86400000 /* one day 24 hours x 60 min x 60 seconds x 1000 miliseconds */))).toGMTString();
			}
			// possible path settings
			if(options.path){
				str += '; path=' + options.path				
			}
			// allow cookies to be set per domain
			if(options.domain){
				str += '; domain=' + options.domain;
			}
		} else {
			// always set the path to /
			str += '; path=/';
		}
		// set the cookie
		document.cookie = str;
	} else if(type == 'read'){
		var c = document.cookie.split(';'),
			str = name,
			i = 0,
			length = c.length;
		
		// loop through our cookies
		for(; i < length; i++){
			while(c[i].charAt(0) == ' ')
				c[i] = c[i].substring(1,c[i].length);
				if(c[i].indexOf(str) == 0){
					return c[i].substring(str.length,c[i].length);
				}
		}
		return false;
	} else {
		// remove the cookie, this is done by settings an empty cookie with a negative date
		Spry.Utils.Cookie('create',name,null,{days:-1});
	}
};