Simple website code clean-up / cross-browser fix

I'm fairly inexperienced when it comes to coding websites and I have cross-browser issues with my website template that I have put together. - A flash .SWF background (inside a div) does not play in IE and Safari (Shows white box instead). - Dynamic Dropdown menu (javascript/css) doesn't work in IE but fine in all other browsers. What I require is: - The dynamic dropdown menu to work in IE (and clean-up the bodged coding) - The flash movie background to work in IE. - The general code to be cleaned-up a little as it is novice/patchy. The end product should be a browser friendly page ready to be made into a template (I can add all the editable regions and what have you myself). Thanks in advance, people. Daniel.