popup image gallery not working

Hi in the below code displaying image gallery for that these are my sample images.Now,When I was click the image want to show as popup the image with left and right slides.

But,When I was click the image it's opening as a full image not popping the image.

Can any one help me.

html

<link href="style.css" media="screen" rel="stylesheet" type="text/css" />
        <link href="about.css" media="screen" rel="stylesheet" type="text/css" />
        <link rel="stylesheet" type="text/css" href="sidebar.css" />
        <link href="iconic.css" media="screen" rel="stylesheet" type="text/css" />
        <script src="js/prefix-free.js"></script>
        <script type="text/javascript" src="js/modernizr-1.5.min.js"></script>
        <script type="text/javascript" src="http://ift.tt/wV40hO"></script>
        <script type="text/javascript" src="http://ift.tt/1M2ZWov"></script>
        <script type="text/javascript" src="js/jquery.sidebar.js"></script>
        <script src="http://ift.tt/1qRgvOJ"></script>
        <link type="text/css" href="http://ift.tt/1vj7D4M" rel="stylesheet" />
        <script type="text/javascript" src="http://ift.tt/1wc0thc"></script>
        <script type="text/javascript" src="lib/jquery-1.10.1.min.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" />
<script type="text/javascript">
        $(document).ready(function() {
            /*
             *  Simple image gallery. Uses default settings
             */

            $('.fancybox').fancybox();

            /*
             *  Different effects
             */

            // Change title type, overlay closing speed
            $(".fancybox-effects-a").fancybox({
                helpers: {
                    title : {
                        type : 'outside'
                    },
                    overlay : {
                        speedOut : 0
                    }
                }
            });

            // Disable opening and closing animations, change title type
            $(".fancybox-effects-b").fancybox({
                openEffect  : 'none',
                closeEffect : 'none',

                helpers : {
                    title : {
                        type : 'over'
                    }
                }
            });

            // Set custom style, close if clicked, change title type and overlay color
            $(".fancybox-effects-c").fancybox({
                wrapCSS    : 'fancybox-custom',
                closeClick : true,

                openEffect : 'none',

                helpers : {
                    title : {
                        type : 'inside'
                    },
                    overlay : {
                        css : {
                            'background' : 'rgba(238,238,238,0.85)'
                        }
                    }
                }
            });

            // Remove padding, set opening and closing animations, close if clicked and disable overlay
            $(".fancybox-effects-d").fancybox({
                padding: 0,

                openEffect : 'elastic',
                openSpeed  : 150,

                closeEffect : 'elastic',
                closeSpeed  : 150,

                closeClick : true,

                helpers : {
                    overlay : null
                }
            });

            /*
             *  Button helper. Disable animations, hide close button, change title type and content
             */

            $('.fancybox-buttons').fancybox({
                openEffect  : 'none',
                closeEffect : 'none',

                prevEffect : 'none',
                nextEffect : 'none',

                closeBtn  : false,

                helpers : {
                    title : {
                        type : 'inside'
                    },
                    buttons : {}
                },

                afterLoad : function() {
                    this.title = 'Image ' + (this.index + 1) + ' of ' + this.group.length + (this.title ? ' - ' + this.title : '');
                }
            });


            /*
             *  Thumbnail helper. Disable animations, hide close button, arrows and slide to next gallery item if clicked
             */

            $('.fancybox-thumbs').fancybox({
                prevEffect : 'none',
                nextEffect : 'none',

                closeBtn  : false,
                arrows    : false,
                nextClick : true,

                helpers : {
                    thumbs : {
                        width  : 50,
                        height : 50
                    }
                }
            });

            /*
             *  Media helper. Group items, disable animations, hide arrows, enable media and button helpers.
            */
            $('.fancybox-media')
                .attr('rel', 'media-gallery')
                .fancybox({
                    openEffect : 'none',
                    closeEffect : 'none',
                    prevEffect : 'none',
                    nextEffect : 'none',

                    arrows : false,
                    helpers : {
                        media : {},
                        buttons : {}
                    }
                });

            /*
             *  Open manually
             */

            $("#fancybox-manual-a").click(function() {
                $.fancybox.open('1_b.jpg');
            });

            $("#fancybox-manual-b").click(function() {
                $.fancybox.open({
                    href : 'iframe.html',
                    type : 'iframe',
                    padding : 5
                });
            });

            $("#fancybox-manual-c").click(function() {
                $.fancybox.open([
                    {
                        href : '1_b.jpg',
                        title : 'My title'
                    }, {
                        href : '2_b.jpg',
                        title : '2nd title'
                    }, {
                        href : '3_b.jpg'
                    }
                ], {
                    helpers : {
                        thumbs : {
                            width: 75,
                            height: 50
                        }
                    }
                });
            });


        });
    </script>
 <div id="galery">
     <h1>Gallery</h1><br>
     <div id="Gallery">

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

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

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

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



        <a class="fancybox-effects-a" href="img/5_b.jpg" title="Lorem ipsum dolor sit amet, consectetur adipiscing elit"><img src="img/5_s.jpg" alt="" /></a>

        <a class="fancybox-effects-b" href="img/5_b.jpg" title="Lorem ipsum dolor sit amet, consectetur adipiscing elit"><img src="img/5_s.jpg" alt="" /></a>

        <a class="fancybox-effects-c" href="img/5_b.jpg" title="Lorem ipsum dolor sit amet, consectetur adipiscing elit"><img src="img/5_s.jpg" alt="" /></a>

        <a class="fancybox-effects-d" href="img/5_b.jpg" title="Lorem ipsum dolor sit amet, consectetur adipiscing elit"><img src="img/5_s.jpg" alt="" /></a>
     </div>
     </div>