How To Tell What Files IE Thinks Are “nonsecure”?

Question

We have a CMS system whose web interface gets served over HTTPS. This works beautifully for Firefox, but when we load it in IE6 or IE7, it complains that \"This page contain

Answer 1

I used Eric's tool (thanks Eric you saved me hours...) and it turns out that IE6 treats a background image specified with a relative path as nonsecure content. Even though it actually requests it over https. So if you're stumped - converting your relative paths to absolute ones might really help...