In Views 3 how to separate rows output from anything else?

Hi Drupalers!

I would like to create a very awsome pager plugin for Views 3 (D7), but to achieve this somehow I have to separate in the view output that part that belongs to actual rows and anything else before and after the rows.

I load the view and get the output like this (copy-paste from views_embed_view() function):

  $view = views_get_view($view_name);

  if (!$view || !$view->access($display_id)) {
    return;
  }

  $output = $view->preview($display_id, $args);

If the view is a HTML list than I need to separate all the

<li>...</li>
<li>...</li>

part, but not the <ul> part.

If its a HTML Table, than I need the

<tr>...</tr>
<tr>...</tr>

part, but not the <table> <thead> part.

How can I render the view programatically to get only the html of the rows?

Any help is appreciated.