Modity DocViewer Flash Script

I the script located here to be modified slightly [login to view URL] I want it show a thumb nail image when the pages are loading. Just one thumb nail for all pages. And count the pages as it goes. I would good if it could say 'loading page 1 of 44', 2 of 44 etc.... but 'loading page 1' would do. Also it would great if it could stream the pages. In other words allow the first page to be viewed before the last page is loaded.