"Download" button for dynamically loaded images

Hello,
I am having trouble finding a script (is it a script?) for a “download button” for a Photo Gallery. The gallery is dynamically loaded onto the Flash document via an XML file.

See this link for an example: https://www.arbonne.com/company/events/photo_albums.asp
(click the [2006 | St. Louis, MO](javascript::wink: link) Notice how there is a “download” button that, when clicked, allows you to download the “called-up” image in the window. Is this a script that I need or is it a plug-in? Please let me know what it is i need to do.

Thank you in advance.

Julio