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Lightbox effect with jQuery (2) - example

Down below is a fully working example of the lightbox (aka thickbox) effect described in the previous article. Note that the technique has even been improved, since the script now prevents by itself a link from being opened. As a result, you do not need to place the target URL as a custom attribute anymore. Just append a class to an anchor and the script is ready to be used!

 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
    <head>
        <title></title>     
        <script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
        <script>
        jQuery(document).ready(function(){
            $('.isLink').click(function(ev){
            // this below prevents the link from being followed
            ev.preventDefault();
            ev.stopPropagation();
            if($("#mylightbox").length==0){
            var sH=$(document).height(), sW=$(document).width(), scPos=$(document).scrollTop();
            var tgtURL=$(this).attr("href");
            $("body").css("overflow","hidden");
            $("body").append("<div id=mylightbox style='position:absolute; z-index:1000; top:0px; left:0px; opacity:0.75; filter:opacity(alpha=0,75); width:"+(sW+20)+"px; height:"+sH+"px; background:#aaa;'></div>");
            $("body").append("<div id=full-image-bg style='z-index:1001; width:100%; height:100%; position:absolute; left:0px; top:"+scPos+"px;'><img id=full-image-img src='"+tgtURL+"' style='position:absolute; width:auto; height:auto; cursor:pointer;'/></div>");
            var picW=$("#full-image-img").width(), picH=$("#full-image-img").height(), lbW=$("#full-image-bg").width(), lbH=$("#full-image-bg").height();
            var cX=(lbW/2)-(picW/2), cY=(lbH/2)-(picH/2);
            $("#full-image-img").css("left",cX+"px").css("top",cY+"px");
            $("#full-image-img").click(function(){
            $("#full-image-bg").remove();
            $("#mylightbox").remove();
            if($("body").height() > $(window).height()){
            $("body").css("overflow","scroll");
            $("body").css("overflow-x","hidden");}
            });
            }
            });
        });
        </script>
    </head>
    <body>
    <a href="https://www.google.com/images/srpr/logo4w.png" class="isLink">Click me!</a>
    <!-- class="isLink" is the only thing needed to tell the browser you want to display the target image in a lightbox -->
    </body>
</html>
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