Vanilla 2

i replaced "rel" to "data-gal" in html and javascript souce but it stopped functioning

jquery.prettyPhoto.js :

theRel = $(this).attr('data-gal');
galleryRegExp = /\[(?:.*)\]/;
isSet = (galleryRegExp.exec(theRel)) ? true : false;

// Put the SRCs, TITLEs, ALTs into an array.
pp_images = (isSet) ? jQuery.map(matchedObjects, function(n, i){ if($(n).attr('data-gal').indexOf(theRel) != -1) return $(n).attr('href'); }) : $.makeArray($(this).attr('href'));
pp_titles = (isSet) ? jQuery.map(matchedObjects, function(n, i){ if($(n).attr('data-gal').indexOf(theRel) != -1) return ($(n).find('img').attr('alt')) ? $(n).find('img').attr('alt') : ""; }) : $.makeArray($(this).find('img').attr('alt'));
pp_descriptions = (isSet) ? jQuery.map(matchedObjects, function(n, i){ if($(n).attr('data-gal').indexOf(theRel) != -1) return ($(n).attr('title')) ? $(n).attr('title') : ""; }) : $.makeArray($(this).attr('title'));

html :

<img width="200" height="200" src="images/thumb.jpg" class="wp-post-image" alt="thumb" />
<h3>headline</h3>
<p>description line</p>
<span><a href="images/full.jpg" class="zoom-icon" title="title here" data-gal="prettyPhoto">View zoomed</a></span>


where else i will make change then ?