How to load url in xml from flash component?

Hi im having diffficulties to get my gallery right. im using a flash component for thumbnail and wanted to make bigger preview with lightbox. but failed. here is the action script and xml file

fla.
var listEvents = new Object();
listEvents.onReleaseThumb = function(obj:Object) {
//get the url for this item
getURL(obj.url);
};
//adding the listener
//comp is the instance name of your thumbnail slider component on stage
comp.addListener(listEvents);
stop();

xml.
<?xml version=“1.0” encoding=“UTF-8”?>
<gallery>
<img thumbEvents=‘true’ thumbnail= ‘img/thumbnails/01s.jpg’ large=‘img/01.jpg’ description=‘aaaaaa’ url=‘javascript:GroupDelegate(‘img1’)" target=’_self"/>
</gallery>

hope someone could help me with this matter
Thanks