Visio Save as Webpage - Viewable on Mac??

[lauralippay]

I have clients (as well as ourselves) that need to view the documents I create in Visio on Macintosh.
View as web page seems to make only PC-viewable pages.
I've had to save things as images and embed them into HTML for all clients (and my boss) to be able to see them cross-platform.
Am I missing something?
Is there an easier way to export files for cross-platform viewing, or a way to save as Webpage that can be viewed on Mac as well as PC?

thanks :]