IE6 Bullets on lists

#site-navigation li {
    background-image:url(../img/site-nav-seperator.gif);
    background-position:0 4px;
    background-repeat:no-repeat;
    float:left;
    padding-left:15px;
}
#site-navigation li.first {
    background-image:none;

}

#site-navigation a {
    color:#666666;
    display: block;
    text-decoration:none;
    margin-right: 1em;
    line-height: 1.1em;
}