Itslearning runs in a secure contex which means our pages are served over HTTPS. If the customer choose to add HTTP content on their site, then the user has to decide whether or not to display "mixed content". To avoid this the customer has to either provide content that is served over HTTPS or allow for mixed content. How the different browsers handles mixed content can be foundhere:
Google Chrome- "This page has insecure content"
- Version 34.0.1847.116 m Load unsafe scripts button does not work (https://code.google.com/p/chromium/issues/detail?id=333308)
Firefox- "Mixed content blocking"
Explorer 9+ - "Only secure content is displayed"