/*
Derived from: http://www.quirksmode.org/js/cookies.html
Retrieved on: 2009-06-17
Modified by: Darryl Ballard
Last modified: 2009-07-08
*/

var QM_Cookies = {
	create: function(name, value, expiration, relative) {
		var expires = "";
		if (expiration) {
			var expirationDate;
			if (relative) {
				// Assume expiration is a number of milliseconds relative to now
				var date = new Date();
				date.setTime(date.getTime() + 1*expiration);
				expirationDate = date;
			} else {
				// Assume expiration is a Date object
				expirationDate = expiration;
			}
			expires = "; expires=" + expirationDate.toGMTString();
		}
		document.cookie = name + "=" + value + expires + "; path=/";
	},
	
	read: function(name) {
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		var ret = null;
		
		for (var i = 0; i < ca.length; i++) {
			var c = ca[i];
			while (c.charAt(0) == ' ') {
				c = c.substring(1, c.length);
			}
			if (c.indexOf(nameEQ) == 0) {
				ret = c.substring(nameEQ.length,c.length);
			}
		}
		
		return ret;
	},
	
	erase: function(name) {
		createCookie(name, "", -1);
	}
};