.tree ul
{
  margin:0px;
  padding:0px;
}

.tree li
{
  margin:0px 0px 0px 15px;
  padding:0px;
  list-style-type:none;
  text-align:left;
  font-family:Arial,Helvetica,sans-serif;
  font-size:13px;
  font-weight:normal;
  left: -20;
}

.symbol-item,
.symbol-open,
.symbol-close
{
  margin:0px 5px 0px 0px;
  float:left;
  width:12px;
  height:15px;
  background-position:left center;
  background-repeat:no-repeat;
}

.symbol-open  { background-image:url("images/bullet-min.gif"); }
.symbol-close  { background-image:url("images/bullet-exp.gif"); }
.symbol-item { background-image:url("images/bullet.gif"); }

ul.bullet li
{
  list-style-image: url("images/bullet.gif");
}