The previous message is from Firefox, the Google Chrome says:

"Your connection to mydomain.com is encrypted with 256-bit encryption. However, this page includes other resources which are not secure. These resources can be viewed by others while in transit and can be modified by an attacker to change the behaviour of the page.

The connection uses TLS 1.0.

The connection is encrypted using AES_256_CBC, with SHA1 for message authentication and DHE_RSA as the key exchange mechanism."

How to include all content to be secure?