function areCookiesEnabled() 
	{
		var cookieEnabled = (navigator.cookieEnabled) ? true : false;
		if (typeof navigator.cookieEnabled == "undefined" && !cookieEnabled)
		{
			document.cookie = "test";
			cookieEnabled = (document.cookie.indexOf("test") != -1) ? true : false;
		}
		return cookieEnabled;
	}

Navigator is the interface represents the state and the identity of the user agent. It allows scripts to query it and to register themselves to carry on some activities.
A Navigator object can be retrieved using the read-only window.navigator property.