/*
 * Functions from http://www.quirksmode.org/js/cookies.html
 */
var Cookie = {
	create: function(name, value, days) {
		var expires = "";
		if (days) {
			var date = new Date();
			date.setTime(date.getTime() + (days*24*60*60*1000));
			expires = "; expires=" + date.toGMTString();
		}
		document.cookie = name + "=" + value + expires + "; path=/";
	},

	read: function(name) {
		var nameEq = name + "=";
		var ca = document.cookie.split(";");
		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) {
				return c.substring(nameEq.length, c.length);
			}
		}
		return null;
	},

	erase: function(name) {
		this.create(name, "", -1);
	}
};