#oldalmenu{
position: fixed; 
top: 0px; 
left: 0px; 
border: 1px solid; 
background-color: #ffffff; 
width: 70px; 
text-align: center;
z-index:356;
}

#a1{
text-decoration: none; 
border: 0px;
}

#a2{
text-decoration: none; 
border: 0px;
}

#a3{
text-decoration: none; 
border: 0px;
}

#diva2{
 padding:2px;
 display:none;
 position:absolute;
 top:165px;
 left:70px; 
 width: 150px; 
 }
 
#oldalmenu #mnu2:hover #diva2{
 display:block; 
}