stylesheet werkt niet met FF

Dit heeft niet echt met php te maken, maar ik gebruik een stylesheet die wel werkt met IE, maar niet met Firefox. Hoe komt dat? Hier is wat ik gebruik:

<style type="text/css">
<!--
body {
{scrollbar-face-color: #E96C40;
scrollbar-shadow-color: #E32D1D;
scrollbar-highlight-color:#E32D1D;
scrollbar-3dlight-color: #E32D1D;
scrollbar-darkshadow-color:#E32D1D;
scrollbar-track-color: #E32D1D;
scrollbar-arrow-color: #E32D1D;
background-color:#E32D1D;
font-family: tahoma;
font-size: 9px;
}

table { background-color:#E96C40;
border-bottom:1pt solid #E96C40;
}

.side { background-color:#E96C40; }

.small { font-family: Tahoma;
font-size: 7px;
text-align: center; }

body, div, td, html, font, p {
color:#E32D1D;
font-family: tahoma;
font-size: 9px;
text-align:justify;
line-height: 12px;
letter-spacing: 0px;
}

A:link, A:active, A:visited {
color: #E32D1D;
font-weight: bold;
text-decoration: none;
cursor: none;
}

A:hover {
color: #ffffff;
font-weight: bold;
text-decoration: none;
cursor: none;
border-bottom: #E32D1D 2px dotted
}

input, textarea, option, select {
background-color: #E96C40;
font: 9px tahoma;
color: #ffffff;
letter-spacing: 1px;
border: 1px solid #E32D1D;
padding:2px; }


h2 {
font-family: Tahoma;
font-size: 9px;
color: #E32D1D;
letter-spacing: 0px;
word-spacing: 2px;
border-bottom: 1px solid #E32D1D;
background-color: #E96C40;
text-align: left;
line-height: 13px;}

.h2 {
font-family: Tahoma;
font-size: 9px;
color: #E32D1D;
letter-spacing: 0px;
word-spacing: 2px;
border-bottom: 1px solid #E32D1D;
background-color: #E96C40;
text-align: left;
line-height: 13px;}
.h2b {
font-family: Tahoma;
font-size: 9px;
color: #E32D1D;
letter-spacing: 0px;
word-spacing: 2px;
border-bottom: 1px solid #E32D1D;
background-color: #E96C40;
text-align: justify;
line-height: 13px;}

i{
color: #ffffff;
line-height: 12px;
letter-spacing: 0px;
font-family: Tahoma;
font-size: 9px;
}

b{
color: #ffffff;
line-height: 12px;
letter-spacing: 0px;
font-family: Tahoma;
font-size: 9px;
}

u{
color: #E32D1D;
line-height: 12px;
letter-spacing: 0px;
font-family: Tahoma;
font-size: 9px;
}

#pngIE {
fillter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=images/site/guestbook.png');
background-repeat:no-repeat;
}

#pngFF{
background-image:url(images/site/guestbook.png);
background-repeat:no-repeat;
}

-->
</style>