function commonHandleCallback(message, context)
{
        var arr = message.split("\n");
        for (var i = 0; i < arr.length; i++)
        {
            var chr = arr[i].substring(0,1);
            switch(chr)
            {
                case 'a':
                alert(arr[i].substring(1).replace("\\n", "\n"));
                break;
                case 'w':
                window.location = arr[i].substring(1);
                break;
            }
        }
}