#navData .treeview > li {
  background-image: none;
}
#navData li.private a {
background-image:url("http://www.edu1world.org/App_Themes/BlogEdu1World/images/sb-bullet-private-group.gif");
background-repeat:no-repeat;
padding-left:15px;
}
.treeview ul li { background: url(images/treeview-default-line.gif) 0 0 no-repeat; }
.treeview ul li.lastCollapsable, .treeview ul li.lastExpandable { background-image: url(images/treeview-default.gif); }