.fancytree-folder .fancytree-icon {
  background-position: 0 0!important;
  background-image: url("images/folder.png");
  background-size:16px;
}
.fancytree-ico-c .fancytree-icon {
  background-position: 0 0!important;
  background-image: url("images/page.png");
  background-size:16px;
}

/* Override the toggle panel */
.TogglePanel div:nth-of-type(1), .TogglePanel tr:nth-of-type(1) td:nth-of-type(1) { 
    background-image:url(images/toggle_expand.png); 
}