Problems with Sharing

I have two problems when I am screen sharing.

1. The audience sees big black out sections on their screens.  On my screen it is a tool bar.  How to I get rid of the blackout's?

2. When I sharing in real-time on my computer, every time a go to a new page, I need to stop sharing and re-share in order for the audience to see my new page.  How do I go seamlessly from one page to another without having to continually stop sharing and then re-share?

Please help!