Domain Masking supported by Johohost?

I am in the process of moving a client’s website over to jodohost. Currently they have a url directory that redirects to an external domain which hosts their video. The destination url is masked (example: www.test.com/videowww.testvideos.com/videohost ) and even google show it that way. I can’t seem to figure out how to do so in Jodohost. The redirect function does not mask the url. Any suggestions (aside from creating a iframe page, which the previous host does not use) is greatly appreciated.

iframe oe cname subdomain is going to be the only option