HTML Coding/Stylesheet Expert for Small Project

Please view: [login to view URL] Javascript Menu buttons contain transparent edges for the purpose of overlaying buttons against static background image. We have the proper png js fix coding so button correctly appear. If you view site in Firefox, lower menu appears correctly but top menu doesn't. IE 6 and 7 browers have different stylesheet being called due to browser detect JS Coding. We'd like to resolve Firefox browser issue first and then move on to IE. Here's coding from Firefox Stylesheet. Table 2 is upper JS Menu. Table 3 contains static graphic, Table 4 is Lower JS Menu. #table2{z-index:800; margin-bottom: -5px; overflow:auto;} #table3{z-index:-5; overflow:auto;} #table4{z-index:500; margin-top:-5px; overflow:auto;} We have attached files to test locally on your end. racer-raam is standard php file that includes header include file. [login to view URL] is IE browser stylesheet. [login to view URL] is Firefox stylesheet. We also included [login to view URL] which is header coding. We also have other projects that we need assistance from very experienced html coder. Cheers,