private function highlightElement($indexArray, $menuArray = null, $nr = 0)
{
//index to get
$i = $indexArray[$nr];
//if menu is null take menuArray
if ($menuArray == null) {
$menuArray = $this->menuArray;
}
//create itterator
$iter = new RecursiveArrayIterator($menuArray);
//move to current index
$iter->seek($i);
//move down until we have found the element - then set the css-class for that element
if (is_array($iter->current())) {
$this->highlightElement($indexArray, $iter->getChildren(), $nr + 1);
} else {
$iter->current()->cssClass = $this->cssClass;
}
}