// Variables --------------------------------



// Functions --------------------------------
// Cookie class object originally from 'JavaScript, 3rd Edition' from O'Reilly, (c)1998 
// with modifications
function Cookie(document, name, hours, path, domain, secure) {
	this.$document = document;
	this.$name = name;
	if (hours) this.$expiration = new Date((new Date()).getTime() + hours*3600000);
	else this.$expiration = null;
	if (path) this.$path = path; else this.$path = null;
	if (domain) this.$domain = domain; else this.$domain = null;
	if (secure) this.$secure = secure; else this.$secure = false;
}

function _cookie_store() {
	var cookieVal = "";
	for (var prop in this) {
		if (prop.charAt(0) == '$' || (typeof this[prop]) == 'function') continue;
		if (cookieVal != '') cookieVal += '&';
		cookieVal += prop + ':' + escape(this[prop]);
	}
	
	var cookie = this.$name + '=' + cookieVal;
	if (this.$expiration) cookie += '; expires=' + this.$expiration.toGMTString();
	if (this.$path) cookie += '; path=' + this.$path;
	if (this.$domain) cookie += '; domain=' + this.$domain;
	if (this.$secure) cookie += '; secure';
	
	this.$document.cookie = cookie;
}

function _cookie_load() {
	// Get the available cookies
	var allCookies = this.$document.cookie;
	if (allCookies == "") return false;
	
	// Find the cookie you want to work with
	var start = allCookies.indexOf(this.$name + '=');
	if (start == -1) return false;
	start += this.$name.length + 1;
	var end = allCookies.indexOf(';', start);
	if (end == -1) end = allCookies.length;
	var cookieVal = allCookies.substring(start,end);
	
	// Split the cookie string into chunks
	var a = cookieVal.split('&');
	for (var i=0; i < a.length; i++) {
		a[i] = a[i].split(':');
	}
	
	// Decode the chunks into their orginal name/value pairs
	for (var i=0; i < a.length; i++) {
		this[a[i][0]] = unescape(a[i][1]);
	}
	
	return true;
}

function _cookie_remove() {
	var cookie;
	cookie = this.$name + '=';
	if (this.$path) cookie += '; path=' + this.$path;
	if (this.$domain) cookie += '; domain=' + this.$domain;
	cookie += '; expires=Fri, 02-Jan-1970 00:00:00 GMT';
	
	this.$document.cookie = cookie;
}

new Cookie();
Cookie.prototype.store = _cookie_store;
Cookie.prototype.load = _cookie_load;
Cookie.prototype.remove = _cookie_remove;