div.nav{
position: fixed; 
z-index:30;
width: 190px;
border-style: solid;
border-width: 1px;
border-color:#C0C0EE;
background-color: #FBF8FF;
padding:3px;
}
div.b{
position:absolute; 
bottom:10px; left:0px; 
z-index:29;
width: 200px;
}