Helper for Node tree display - for a FB post comment

js_tree_display_helper.js

function display_sub_tree(node, _level)
{
  level = _level || 0 ;

  result = '<ul class="level-'+level+'">' ;

  children_of(node).each(function(child)
  {
     result  = result + '<li>' + child.name ;

     if (children_of(child).length > 0)
     {
       result = result + display_sub_tree(child, level+1) ;
     }

     result  = result + '</li>' ;
  }) ;

  result  = result + '</ul>' ;

  return result ;
}