Avoiding security warnings with ssl

Hi. My client's not happy because some users always have security warning popups from the broswer when visiting the site. I have http links to youtube video on the page, which also contains the secure form so I'm stuck with that. He doesNt, want to change anything in the site design.

I have no choice but running the site in https, it's a one page site.

Is there a way, maybe some code, to fix this issue?

Thanks

 

Are you and your client sharing the same Ip address ?

 

No. i think he has now its own ip, which again I think that was a must to have his certificate.