Browser Issue

I am doing a free website for Tanzanian safari guides so they can start up in business as they tend to receive only nominal fees for doing all the work whilst the main fees go to foreign contractors.

However, despite embedding three Flash movies with the js object, the site only shows in Internet Explorer if the user installs IE with addons.
So some see the site and some don't.
It works in every other browser.
The banner Flash movie shows okay. The two on the right side don't?

I desperately need help identifying the problem.
Please, does anyone know a fix?
The site is live here:

http://africahalisiexpeditions.com/index.html