$(document).ready(function()

        {

        $(window).scroll(function()

        {

        $('#message_box').animate({top:$(window).scrollTop()+"px" },{queue: false, duration: 350}); 

        });

        $('#close_message').click(function()

        {

        $('#message_box').animate({ top:"+=15px",opacity:0 }, "slow");

        });

        });