Please help me understand this MS popup.

I am trying to finish up my home-grown shopping cart, but I keep getting the MS "This page contains both secure and nonsecure items" message. I do not own a SSL; I have a shared one through my web host.

I've read as much as I could on the subject and I understand I should replace every image reference from http to https. Yet, I still get the message.

Does this message come up on external javascripts too (I have G analytics js running)? How about anchor links to an http page? Flash objects?

Thanks.

__________________
Skateboards and iPods...what a combination!
http://www.getmea-skateboard.com