I am trying to deliver a secure page here: https://web.amfam.com/draw_your_dream/gallery/index.asp with the gallery embedded and pulling from a flickr gallery, but IE8 is giving me a security warning. The rest of the page is secure because removing the gallery doesn't give me the security warning.

I am sure the solution is probably something I have overlooked to make the gallery use https instead of http. Any help would be appreciated.

This page is being brought into a Facebook page using an iframe so this page has to be secure. https://www.facebook.com/amfam/app_523930440966735