CSS no funciona en firefox?

<style type="text/css">
body {
background-image: url('AQUI VA LA URL DEL LOGO');
background-color:black;
background-repeat:repeat;
font-family:Arial, Helvetica, sans-serif;
font-size:small;
}
</style>
Tambien me di cuenta de que tu pagina tiene muchos errores y advertencias [36 errores y 1 advertencia].
Te recomiendo que uses el Microsoft Expression Web Designer es el que yo uso, es mejor que el Dreamweaver 9 bueno ahi se da con el Dreamweaver CS3.
Espero que te sirva.



Suerte...!

Mira estos son los errores que tienes:
Result: 36 errors / 1 warning
line 24 column 35 - Error: required attribute "id" not specified
line 26 column 119 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 26 - Info: start tag was here
line 27 column 15 - Error: there is no attribute "title"
line 27 column 23 - Error: element "acornym" undefined
line 29 column 118 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 29 - Info: start tag was here
line 29 column 141 - Error: element "acornym" undefined
line 31 column 110 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 31 - Info: start tag was here
line 32 column 23 - Error: element "acornym" undefined
line 34 column 111 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 34 - Info: start tag was here
line 34 column 138 - Error: element "acornym" undefined
line 36 column 104 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 36 - Info: start tag was here
line 36 column 127 - Error: element "acornym" undefined
line 38 column 95 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 38 - Info: start tag was here
line 38 column 116 - Error: element "acornym" undefined
line 40 column 127 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 40 - Info: start tag was here
line 40 column 155 - Error: element "acornym" undefined
line 42 column 96 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 42 - Info: start tag was here
line 42 column 124 - Error: element "acornym" undefined
line 44 column 121 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 44 - Info: start tag was here
line 44 column 145 - Error: element "acornym" undefined
line 46 column 106 - Error: end tag for "area" omitted, but OMITTAG NO was specified
line 46 - Info: start tag was here
line 46 column 131 - Error: element "acornym" undefined
line 50 column 144 - Error: end tag for "img" omitted, but OMITTAG NO was specified
line 50 - Info: start tag was here
line 51 column 28 - Error: there is no attribute "height"
line 53 column 83 - Error: value of attribute "scrolling" cannot be "Auto"; must be one of "yes", "no", "auto"
line 59 column 174 - Error: value of attribute "align" cannot be "absmiddle"; must be one of "top", "middle", "bottom", "left", "right"
line 65 column 24 - Error: there is no attribute "type"
line 65 column 62 - Error: there is no attribute "wmode"
line 65 column 80 - Error: there is no attribute "src"
line 65 column 210 - Error: there is no attribute "height"
line 65 column 222 - Error: there is no attribute "width"
line 65 column 227 - Error: element "embed" undefined
line 77 column 107 - Warning: cannot generate system identifier for general entity "hl"
line 77 column 107 - Error: general entity "hl" not defined and no default entity
line 77 column 109 - Error: reference to entity "hl" for which no system identifier could be generated
line 77 column 106 - Info: entity was defined here
line 77 column 221 - Error: reference to entity "hl" for which no system identifier could be generated
line 77 column 106 - Info: entity was defined here
line 77 column 307 - Error: element "embed" undefined

Buno solo te decia para que aprendas a hacerlas bien claro todo mundo tiene errores.

Suerte...!