how to create JQuery picture viewer with next and back buttons

Am Looking for help to solve this problem i would like to create a simple image viewer with the following specifications.

MySQL Fetch Images
User Click One Image to view (picture-viewer popup, selected image shown)
User be able to see NEXT image by clicking NEXT
User be able to see PREV image by clicking PREV
On ESC picture-viewer closed

Since am not good in JavaScript Nor JQuery so i just applied the basic to produce the following code which is not able to meet minimum expectations. Instead of showing the user selected image is showing the first image from the unordered list and is not working on IE unless i apply auto start the function i don't need. NEXT/PREV picture has to be shown only if user click next/prev.

<script language="javascript">
$('.ppt li:gt(0)').hide();
$('.ppt li:last').addClass('last');
$('.ppt li:first').addClass('first');
var cur = $('.ppt li:first');
var interval;

$('#fwd').click( function() {
    goFwd();
    showPause();
} );

$('#back').click( function() {
    goBack();
    showPause();
} );

function goFwd() {
    stop();
    forward();
    start();
}

function goBack() {
    stop();
    back();
    start();
}

function back() {
    cur.fadeOut( 1000 );
    if ( cur.attr('class') == 'first' )
        cur = $('.ppt li:last');
    else
        cur = cur.prev();
    cur.fadeIn( 1000 );
}

function forward() {
    cur.fadeOut( 1000 );
    if ( cur.attr('class') == 'last' )
        cur = $('.ppt li:first');
    else
        cur = cur.next();
    cur.fadeIn( 1000 );
}



// close em_picture on esc press
window.document.onkeydown = function (e)
{
    if (!e){
        e = event;
    }
    if (e.keyCode == 27){
        em_picture_close();
    }
}

function em_picture_close(){
document.getElementById('b1').style.overflow='auto';    
$("#em_picture").hide();
    $("#em_viewer").hide();
    $(".images_tab").show();
    $("#chart").show();

}
    </script>

HTML

<div id="images_container">
<div id="em_picture" style="display:none;">
<div id="loadimage">
<ul class="ppt">
<li><img src="moments/1372072563PH.png" class="imgview" border="0" id="56"></li>
<li><img src="moments/1372084261art.jpg" class="imgview" border="0" id="3"></li>
<li><img src="moments/1372084531Hot.jpg" class="imgview" border="0" id="6"></li>
<li><img src="moments/137207211166.jpg" class="imgview" border="0" id="40"></li>
</ul>
<span class="prev" id="back" style="display:none" title="prev image"></span> 
<span class="next" id="fwd" style="display:none" title="next image"></span>
</div>
</div>
</div> 
<!-- table where the first image can be selected to be previewed -->
<table cellpadding="0" cellspacing="0" border="0" class="imagestable">
<tr>
<td id="" class="album_image">
<span class="moments_details" style="display:none;">share . hide . delete</span>
<img src="moments/1372072563PH02053J.JPG" class="my_em_moments" border="0" id="showme">
</td>
</table>

to those who can figure out this in other ways please do so, already made working code is accepted

Thanks and regards

Solution

ok for your ease, I'm eleborating it step by step:

download the files from the link.
place the lib and source folder in another folder.
place your file in which you're coding in the same folder.
place all images in same folder or whereever you want to place them

and write the code as

<!DOCTYPE html>
<html>
<head>
<title>Picture Gallery</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <script type="text/javascript" src="lib/jquery-1.10.1.min.js"></script>
    <script type="text/javascript" src="lib/jquery.mousewheel-3.0.6.pack.js"></script>
    <script type="text/javascript" src="source/jquery.fancybox.js?v=2.1.5"></script>
    <link rel="stylesheet" type="text/css" href="source/jquery.fancybox.css?v=2.1.5" media="screen" />
    <link rel="stylesheet" type="text/css" href="source/helpers/jquery.fancybox-buttons.css?v=1.0.5" />
    <script type="text/javascript" src="source/helpers/jquery.fancybox-buttons.js?v=1.0.5"></script>
    <link rel="stylesheet" type="text/css" href="source/helpers/jquery.fancybox-thumbs.css?v=1.0.7" />
    <script type="text/javascript" src="source/helpers/jquery.fancybox-thumbs.js?v=1.0.7"></script>
    <script type="text/javascript" src="source/helpers/jquery.fancybox-media.js?v=1.0.6"></script>
<script type="text/javascript">
$(document).ready(function() 
{
        $('.fancybox').fancybox();  });
</script>   
<style>
    .fancybox-custom .fancybox-skin 
    {
        box-shadow: 0 0 50px #222;
    }

    body 
    {
        max-width: 700px;
        margin: 0 auto;
    }
</style>

</head>
<body>
    <h3>Gallery Style 1</h3>
    <p>
        <a class="fancybox" href="1_b.jpg" data-fancybox-group="gallery" title="Lorem ipsum dolor sit amet"><img src="1_s.jpg" alt="" /></a>

        <a class="fancybox" href="2_b.jpg" data-fancybox-group="gallery" title="Etiam quis mi eu elit temp"><img src="2_s.jpg" alt="" /></a>

        <a class="fancybox" href="3_b.jpg" data-fancybox-group="gallery" title="Cras neque mi, semper leon"><img src="3_s.jpg" alt="" /></a>

        <a class="fancybox" href="4_b.jpg" data-fancybox-group="gallery" title="Sed vel sapien vel sem uno"><img src="4_s.jpg" alt="" /></a>
    </p>

</body>
</html>