1. Make sure that all images AND videos are absolute references instead of relative:
Relative Example: /images/picture.gif
Absolute Example: http://domain.com/images/picture.gif
2. Be sure to make the URL of the image a secure URL:
Non-secure Example: http://www.domain.com/images/picture.gif
Secure Example: https://www.domain.com/images/picture.gif
3. All references to javascript must be https, not http.
4. Any dhtml menus or javascript menus must be created using external references to the files in https and not http.
