AS3 XML issues

hi All

I have got a fancy thumbnail scroller that works well but having just converted from AS2 to AS3 I am having trouble finding the right code to call a large image from the xml and the descriptive text to fill a text box.

What I need is the AS3 equivalent of the following:

currentThumb_mc.onRollOver = currentThumb_mc.onDragOver = function(){
info_txt.text = this.title;
currentThumb_mc.onRollOut = currentThumb_mc.onDragOut = function(){
info_txt.text = “”;
currentThumb_mc.onRelease = function(){

Anyone able to help?

Thanks y’all