Dear list participants,

While fine tuning some css/html file for Mac browser, I still meet a major problem:

For http://www.freeke.net/OPC/resultaten.htm, only on MacIE5, the SECONDARY NAVIGATION BAR (Alles selecteren | Alles deselecteren | Toevoegen aan bewaarset Download & mail | Zoekresultaat inperken) IS PRESENTED AS A VERTICAL LIST. It is defined as:

.contentknoppenbalk ul,
.contentknoppenbalk li {
margin:0;
padding:0;
list-style-type:none;
color:white;
}
.contentknoppenbalk li {
background-color: #B9BCCD;
float:left;
}
.contentknoppenbalk a {
color:#000;
position:relative;
background: transparent;
text-decoration:none;
padding:0 6px;
white-space:nowrap;
border-left: 1px solid #ccc;
border-top: 1px solid #ccc;
border-right: 1px solid #666;
border-bottom: 1px solid #666;
}
.contentknoppenbalk a:hover {
background: #fff;
border-left: 1px solid #666;
border-top: 1px solid #666;
border-right: 1px solid #ccc;
border-bottom: 1px solid #ccc;
}

Thanks in advance.
Regards,
Igor