function getCookie( cookieName ){
	if( document.cookie != null ){
		var cookieJar = document.cookie.split( ";" );
		for( var i=0; i<cookieJar.length; i++ ){
			if( cookieJar[ i ].indexOf( cookieName ) > -1 ){
				var cookie = cookieJar[ i ].split( cookieName );
				if( cookie.length == 2 ){
					return cookie[ 1 ];
				} else {
					return null;
				}
			}
		}
	}
	return null;
};