Using XSLT to Generate a Multi-level Tree Menu from XML

body
{
   font-family: Verdana;
   font-size: x-small;
}
.IsVisible
{
   display: block;
}
.NotVisible
{
   display: none;
}
.Expander
{
   cursor: hand;
   font-family: Courier;
}
.Parent DIV
{
   margin-Left: 15px !important;
}