Io credo che il problema stia qui :
codice:
#menu ul {   margin:0;   
margin-bottom:10px;   
padding:0;   
font-size:14px;   
line-height:19px;   
}     

#menu li {   margin:0;   
padding:0;   
padding-left:19px;   
list-style:none;   
}     

#menu li a:link, #menu li a:visited {color:#000000; 
text-decoration:none;
}   

#menu li a:hover {text-decoration:underline; 
color:#000000; 
font-weight:normal;
}     

#selected {color:#FFFFFF; 
background-image:url(../files/menu_selected.gif);
}   

#selected a:link, 
#selected a:visited,
#selected a:hover{   color:#FFFFFF;   
text-decoration:none;   
font-weight:bold;   
}
Prova e facci sapere.

Ciao Ciao