Colorbox extra caption

HTML

<script src="https://rawgithub.com/jackmoore/colorbox/master/jquery.colorbox-min.js"></script>
<p>
    <a href="https://github.com/jackmoore/colorbox/raw/master/content/ohoopee1.jpg" rel="example1" title="Me and my grandfather on the Ohoopee.">Grouped Photo 1</a>
</p>
<p>
    <a href="https://github.com/jackmoore/colorbox/raw/master/content/ohoopee2.jpg" rel="example1" title="On the Ohoopee as a child">Grouped Photo 2</a>
</p>
<p>
    <a href="https://github.com/jackmoore/colorbox/raw/master/content/ohoopee3.jpg" rel="example1" title="On the Ohoopee as an adult">Grouped Photo 3</a>
</p>

CSS

#cboxLoadedContent { position: relative; }
#extra-info {
    position: absolute;
    float:right;
    bottom: 0;
    left: 0;
    right: 0;

    background: #000;
    color: #fff;
    opacity: 0.8;
    filter: alpha(opacity=80);
    padding: 10px;
    
}


/*
    ColorBox Core Style:
    The following CSS is consistent between example themes and should not be altered.
*/
#colorbox, #cboxOverlay, #cboxWrapper{position:absolute; top:0; left:0; z-index:9999; overflow:hidden;}
#cboxOverlay{position:fixed; width:100%; height:100%;}
#cboxMiddleLeft, #cboxBottomLeft{clear:left;}
#cboxContent{position:relative;}
#cboxLoadedContent{overflow:auto;}
#cboxTitle{margin:0;}
#cboxLoadingOverlay, #cboxLoadingGraphic{position:absolute; top:0; left:0; width:100%;}
#cboxPrevious, #cboxNext, #cboxClose, #cboxSlideshow{cursor:pointer;}
.cboxPhoto{float:left; margin:auto; border:0; display:block;}
.cboxIframe{width:100%; height:100%; display:block; border:0;}

/* 
    User Style:
    Change the following styles to modify the appearance of ColorBox.  They are
    ordered & tabbed in a way that represents the nesting of the generated HTML.
*/
#cboxOverlay{background:url(https://raw.github.com/jackmoore/colorbox/master/example1/images/overlay.png) repeat 0 0;}
#colorbox{}
    #cboxTopLeft{width:21px; height:21px; background:url(https://raw.github.com/jackmoore/colorbox/master/example1/images/controls.png) no-repeat -100px 0;}
    #cboxTopRight{width:21px; height:21px; background:url(https://raw.github.com/jackmoore/colorbox/master/example1/images/controls.png) no-repeat -129px 0;}
    #cboxBottomLeft{width:21px; height:21px; background:url(https://raw.github.com/jackmoore/colorbox/master/example1/images/controls.png) no-repeat -100px -29px;}
    #cboxBottomRight{width:21px; height:21px; background:url(https://raw.github.com/jackmoore/colorbox/master/example1/images/controls.png) no-repeat -129px -29px;}
    #cboxMiddleLeft{width:21px;...

JavaScript

$("a[rel='example1']").colorbox();

$(document).bind('cbox_complete', function(){
    var extra = $.colorbox.element().text();
    $('#cboxLoadedContent').append('<div id="extra-info">' + extra + '</div>');
});