Help working the progress bar component

I am working on a page using the loader and progress bar components in Flash 8. here is the site…
www.eastgaterocks.com/media.htm

just navigate to pics.

I want the thumbnails to load the main picture, which they do. My problem is that when you click on any of the pictures, only the first one you click on actually uses the progress bar, the others after that just load without the progress bar. Any ideas? my buttons each have this AS on them:

on(release) {
myLoader.contentPath = “pics/pic1.gif”;
}

My progress bar has the Loader’s instance name as the source. What am i doing wrong? Thanks!

-Chase