Fix my 2 web pages to work in Firefox as well as IE

I have 2 web pages [login to view URL] [login to view URL] When you view it in Internet Explorer, they are shown properly, but in Firefox the box stays on the left instead of center. Need someone to go thru those 2 pages and 1. Fix it that it looks good in both IE and Firefox 2. Based on another 2 pages I provide, develop 2 simple templates where I can just insert my content, replace the header and they will be ready to go.