Firefox vs. IE & Screen Resolutions

I wish firefox supported CSS tags for changing the appearence of the browser bar. IE supports it, but that's about the only thing that works in IE without me having to fuck around and do something ultra complicated just so it looks okay in one browser, while making most stuff work in Firefox doesn't take work, it just works. I also discovered since I've been fucking around with my Dad's computer and fixing it up good since I was at it, that I need to change all the hard work I put into static placement of my layout as it doesn't scale to higher resolutions very well at all. I was working on it at a much lower screen resolution and didn't think about. Now I need to change static pixel placements with relative absolutes and hope and pray that stuff renders it how I want.
I have some ideas for graphics to use, but I'm going to work on that much later, but the ideas and early concenptial stuff is working good.