Debug one javascript/flash page of our website

Hello, We have one page with some javascript and flash video players on our website that does not work well except with firefox (without flashblock): [login to view URL] The page starts with a video player and a form where we ask the user for her name and age. Then the user should press a button and the rest of the page is displayed. Some other smaller videos are on the rest of the page, with other form elements. The rest of the page also has some occurences of {{firstname}} and {{age}} that should be replaced by the values entered by the user. There is a javascript to handle tooltips on some images; the replacements should also be done in the contents of the tooltips There is another javascript to handle an email validation before the form is POSTed to the server. * Make sure that the videos will play in IE as well as in firefox (currently, at least IE7 does not work for the small videos) * Make sure that the videos will work with firefox + flash block (currently, only the first big video works with firefox&flash block) * Make sure that the {{}} replacements work with all browsers, including Safari 3.2 which currently does not replaces them * Make sure that the tooltips work well for all browsers * If possible make the page less heavy in its use of the video players (we suspect it is highly inefficient since only high-end hardware plays the videos without problems). Since all the small videos share the same player code, maybe we can optimize something. * Generally, make sure that the page is fast and works on all browsers. We are OK for most javascript changes, minor html changes and flash changes only if the benefits are high.