get depths?

<?php
$level = 1;
$currentId = $modx->documentObject['parent'];

while ($currentId) {  // quit when parent id is 0
    $currentId = $modx->getParent($currentId,1,'parent');
    $level++;
}

// at this point, $level should be the level of the current document
?>

<?php 
$level = 1;
$parentIdVal = $modx->documentObject['parent'];
while ($parentIdVal) {  // quit when parent ID is 0
	$parentId = $modx->getParent($parentIdVal,1,'parent');
	$parentIdVal = $parentId['parent'];
	$level++;
}
?>