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.$secure = true; else this.$secure = false;
}

//This function is the store() method of the Cookie object.
function _Cookie_store()
{
	var cookieval = "";
	for(var prop in this){
		//ignore properties with names that begin with '$' and also methods.
		if((prop.charAt(0) == '$') || ((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 a list of all cookies that pertain to this document. 
	var allcookies = this.$document.cookie;
	if (allcookies == "") return false;
	
	//extract just the named cookie from list.
	var start = allcookies.indexOf(this.$name + '=');
	if (start == -1) return false //cookie not defined yet for this page.
	start += this.$name.length + 1; //skip name and equals sign.
	var end = allcookies.indexOf(';', start);
	if(end == -1) end = allcookies.length;
	var cookieval = allcookies.substring(start, end);
	
	
	
	//break the value down into individual state variable names and values.
	//Name/value pairs seperated by ampersands, individual names and values are 
	//seperated from each other by colons.
	
	var a = cookieval.split('&');
	for (var i=0; i<a.length; i++)
		a[i] = a[i].split(':');
		
	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;