if(typeof createCookie == 'undefined') {
	var createCookie = function(name, value, days) {
		if (days) {
			var date = new Date();
			date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
			var expires = "; expires=" + date.toGMTString();
		}
		else var expires = "";
		document.cookie = name+"="+value+expires+"; path=/";
	};
}
if(typeof readCookie == 'undefined') {
	var readCookie = 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;
	};
}
if(typeof eraseCookie == 'undefined') {
	var eraseCookie = function(name) {
		createCookie(name, "", -1);
	};
}