As3/xml Template Modifications

i have an AS3/XML template that i am working on and need some help making a minor modifications to the template.

you can view the template below…
http://activeden.net/item/xml-flip-book-as3/63869

i need to add a button “back to main” and this will link to a url.

attached is a sample. button that needs adding is in yellow.

let me know if u guys are unsure.

thanks