Problema con <ul> y navegadores

[Ruben_JD]

prueba con quitar los ul que estan demas:
ul {
list-style: none;
margin-left: -40px;
padding: 0;
}
#leftMenu{
width:160px;
height:300px;
position:absolute;
margin-left: 0px;
margin-top: 90px; }
#leftMenu li{
float:left;
font:12px/30px "Trebuchet MS", Arial, Helvetica, sans-serif;
font-weight:bold;
text-transform:uppercase;}
#leftMenu li a{
width:160px;
height:30px;
/*funciona bien en Firefox 2 con estsa 2 lineas*/
voice-family: "\"}\"";
voice-family: inherit;

display:block;
background-color: #FFFFFF;
color:#9A2E00;
text-decoration:none;
text-align:center;}
#leftMenu li a:hover{
background:/*url("../Imagenes/menubg-hover2.gif") 0 0 no-repeat*/ #00818A;
color:White;}
#leftMenu li.menuopt{
margin:0 0 0 1px;}
#leftMenu li.selected{
width:160px;
height:30px; display:block;
background:/*url("../Imagenes/menubg-hover2.gif") 0 0 no-repeat */#00818A;
color:Blue;
text-align:center;}