// from OReilly book pg 270

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;
}

Cookie.prototype.store = function() {
	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;
}

Cookie.prototype.load = function() {
	var allcookies = this.$document.cookie;
	if(allcookies == "") return false;
	var start = allcookies.indexOf(this.$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);

	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;
}

Cookie.prototype.remove = function() {
	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;
}