Problem:
You create a presentation with animations in PowerPoint 2000 or later. Everything works fine, but when you Save as Web Page, there are no animations in the HTML version.
Solution:
Choose Tools, Options, and click the General tab.
Click the Web Options button.
On the General tab of Web Options dialog box, put a check next to "Show slide animation while browsing"
Click OK then click OK again to get back to the PowerPoint editing screen.
Save your presentation as HTML again; this time the animations should work.