ul.tree {
  display: block;
  margin-left:5px ;
  padding-left:5px;
}

ul.tree ul{
  display: block;
  margin-left: 0;
  padding-left: 0;
  margin-top: 5px;
  margin-bottom: 5px;
} 

ul.tree li {
  display: block;
  list-style-type: none;
  padding-left: 20px;
  background-image: url("gfx/document.gif");
  background-position: left top;
  background-repeat: no-repeat;
  margin-top: 5px;
  margin-bottom: 5px;
}

ul.tree li a {
  text-decoration: none;
  cursor: pointer;
}

ul.tree li a.folder {
 
}

ul.tree li a.active {
  font-weight: bold;
}

ul.tree li a:hover {
  text-decoration:none;
}