Using an embed code in Captivate 7

Hi there,

I am trying to add various web objects to my project. For example a Prezzi and a Hapyak video. I can obtain embed from these that looks something like this: <iframe src="http://prezi.com/embed/t8hbaqiczift/?bgcolor=ffffff&lock_to_path=0&aut oplay=0&autohide_ctrls=0&features=undefined&disabled_features=undefine d" width="605" height="440" frameBorder="0"></iframe>

Which I have then pasted into a .html file in Dreamveaver, saved as index.html and then inserted in the project using the web object interaction.

When I use it on the LMS it works fine but other users do not see the videos - does anyone know why this might be?

I am using Chrome and ithe users mostly use Explorer - would this make any difference?

Thanks for any advice !