Map images not loading after url change

Hi, I have changed my site url from http://82.78.yyy.xx to https://hidxx.com. The Map images are no longer loading on chrome because of error Mixed Content: The page at '<url>' was loaded over HTTPS, but requested an insecure element '<url>'. This request was automatically upgraded to HTTPS, For more information see <url>. (Map images are loading on firefox)

So http://82.78.yyy.xx/hot/7/70/44.png is loading, but https://hidxx.com/hot/7/70/44.png is not loading, how can I fix this?