scrollbalken ausblenden oder farblich verändern

[momo]

<style type="text/css">
<!--
a:link {
 color: #000099;
 text-decoration: none;
}
a:visited {
 color: #000099;
 text-decoration: none;
}
a:hover {
 color: #009900;
 text-decoration: none;
}
a:active {
 color: #990000;
 text-decoration: none;
}
-->

body {
font-family:Arial;
scrollbar-base-color:#ddddff;
scrollbar-track-color:#000000;
scrollbar-face-color:#000000;
scrollbar-highlight-color:#000000;
scrollbar-3d-light-color:#ddddff;
scrollbar-darkshadow-color:#ddddff;
scrollbar-shadow-color:#ddddff;
scrollbar-arrow-color:#ddddff;
}
</style>

was muss ich da einfügen, dass man die scrollbar nicht sieht?