Message Box

<!-- HTML -->
<!-- #dialog is the id of a DIV defined in the code below -->
<a href="#dialog" name="modal">Simple Modal Window</a>

<div id="boxes">


    <!-- #customize your modal window here -->

    <div id="dialog" class="window">
        <b>Testing of Modal Window</b> |

        <!-- close button is defined as close class -->
        <a href="#" class="close">Close it</a>

    </div>


    <!-- Do not remove div#mask, because you'll need it to fill the whole screen -->
    <div id="mask"></div>
</div>

<!-- CSS -->
/* Z-index of #mask must lower than #boxes .window */
#mask {
  position:absolute;
  z-index:9000;
  background-color:#000;
  display:none;
}

#boxes .window {
  position:absolute;
  width:440px;
  height:200px;
  display:none;
  z-index:9999;
  padding:20px;
}


/* Customize your modal window here, you can add background image too */
#boxes #dialog {
  width:375px;
  height:203px;
}

<!-- jQuery -->
$(document).ready(function() {

    //select all the a tag with name equal to modal
    $('a[name=modal]').click(function(e) {
        //Cancel the link behavior
        e.preventDefault();
        //Get the A tag
        var id = $(this).attr('href');

        //Get the screen height and width
        var maskHeight = $(document).height();
        var maskWidth = $(window).width();

        //Set height and width to mask to fill up the whole screen
        $('#mask').css({'width':maskWidth,'height':maskHeight});

        //transition effect
        $('#mask').fadeIn(1000);
        $('#mask').fadeTo("slow",0.8);

        //Get the window height and width
        var winH = $(window).height();
        var winW = $(window).width();

        //Set the popup window to center
        $(id).css('top',  winH/2-$(id).height()/2);
        $(id).css('left', winW/2-$(id).width()/2);

        //transition effect
        $(id).fadeIn(2000);

    });

    //if close button is clicked
    $('.window .close').click(function (e) {
        //Cancel the link behavior
        e.preventDefault();
        $('#mask, .window').hide();
    });

    //if mask is clicked
    $('#mask').click(function () {
        $(this).hide();
        $('.window').hide();
    });

});