ho sostituito questa:

/* --------- Menu di 00sinistra.asp --------- */

.classe_top table , td
{
font-family: Tahoma, Arial, Geneva;
font-size: 9px;
font-weight: none;
color: #D9D9D9;
font-weight: bold;
text-decoration: none;
}

.classe_top a , a:link , a:visited , a:hover
{
font-family: Tahoma, Arial, Geneva;
font-size: 9px;
font-weight: none;
color: #D9D9D9;
font-weight: bold;
text-decoration: none;
}


.menu_normale
{
font-family: Tahoma, Arial, Geneva;
font-size: 9px;
font-weight: none;
color: #D9D9D9;
font-weight: bold;
text-decoration: none;
}

.menu_hover
{
font-family: Tahoma, Arial, Helvetica;
font-size: 9px;
color:#FFFFFF;
font-weight: bold;
text-decoration: none;
}
/* --------- Menu di 00sinistra.asp --------- */




con questo



/* --------- Menu di 00sinistra.asp --------- */

a.menu_normale:link,visited
{
font-family: Tahoma, Arial, Geneva;
font-size: 9px;
font-weight: none;
color: #D9D9D9;
font-weight: bold;
text-decoration: none;
}

a.menu_hover:hover
{
font-family: Tahoma, Arial, Helvetica;
font-size: 9px;
color:#FFFFFF;
font-weight: bold;
text-decoration: none;
}

/* ------------ Fine Menu di Sinistra ------------ */


ed ho corretto anche dentro file html
come suggerito da:
piero06
ma mi da lo stesso l'errore!
non riesco a vederlo!!!!!!