The webbroswer control is similar to the webbrowser you use. (IE) It actually creates an instance of IE and give the methods to deal with the control.
If you are having a problem like this and if you want to view the slide show at once (all the slides); the webbrowser control has nothing to do with that. It is the way the web page is designed.
You can write a piece of code which detects the next hyperlink and and auto navigate to that after a specific time. Since you have the Navigate() it won't be that hard to do this. All you have to do is find the hyperlink to the next slide (even this won't
be a hard task)
if you want further classifications do a post here.