Senocular's XML image gallery using URLs

I am new to using XML in Flash, and am following senocular’s XML tutorial (http://www.kirupa.com/web/xml/examples/portfolio.htm).

In the tutorial, when a thumbnail is clicked, it displays the image (by its URL) within the flash file, but I wish to open a new browser window and just display it there.

In the code:

currentThumb_mc.onRelease = function(){
			image_mc.loadMovie(this.image);

instead of image_mc.loadMovie(this.image), could I use getURL? How can I get it to open the URL associated with that image?

Thanks in advance