How to prevent child node to dragged in another parent node

[bugfirstx]

Thank you

[b-cil]

prevent child to go parent and parent to go child, my guess is that you have just to play with parent id to get what you want on top

beforeDragStop: function(l,e, p){
// l is the main container
// e is the element that was moved
// p is the place where element was moved.
m_element = $(e).data('type');
t_element = $(p).hasClass('nestable');

    if(m_element == "child"){
      if (t_element){
        return false;
      }else{
        return true;
      }
    }else if (m_element == "root"){
      if (t_element){
        return true;
      }else{
        return false;
      }
    }
}