security setting issue(?) website not being displayed

> Hi,
>
> For some reason certain corporate users are not able to view
> [redacted] programmed in WP, would you happen to know why this is
> happening? Some cannot see the entire site, either cannot see the picture
> slideshow on the front/home page, and the background illustrations on the NEWS
> tab seem to get stuck when flipping between the tabs. The illustration in
> Contact and About only appear for a second and then disappears, after viewing
> the News page, the illustration in the background stays displayed, even when
> clicking on the Contact or About pages.
>
> Is this a security setting issue, ie the corporate websites block the site for
> whatever reason, or is it a potential problem with the site’s programming / coding?
>
> I would appreciate if this message is not published to the public www.
>
> Kind regards