.Node {
    margin-left: 18px;
    zoom: 1; 
}
 
.IsRoot {
    margin-left: 0;
}
.Expand {
    width: 18px;
    height: 18px;
    float: left;
    position: relative;
    top:1px;
    margin-right:0.3em;
}
 
.ExpandOpen .Expand {  
    background-image: url(/img/minus.gif);   
}
.ExpandClosed .Expand {
    background-image: url(/img/plus.gif);
}
.ExpandLeaf .Expand {
    background-image: url(/img/leaf.gif);
}

.ExpandOpen ul {
    display: block;
}
 
.ExpandClosed ul {
    display: none;
}
.ExpandOpen .Expand, .ExpandClosed .Expand {
    cursor: pointer;
}
 
.ExpandLeaf .Expand {
    cursor: auto; 
}

.IsRoot { margin-left: 0; }