title: Controlling Placeholder Height with jQuery-UI Sortable
body: <p>I'm using the jQuery-UI sortable component to drag table rows. Because of my requirements, I'm creating a helper element to hold multiple rows during the drag.</p>
  
  <p>I seem to have this working, but the empty space inserted at the current drag position is only tall enough for a single row. Can anyone see why the placeholder isn't as tall as the content I'm dragging?</p>
  
  <p>I tried setting <code>style="height:auto"</code> in the parent element being dragged but this has no effect.</p>
  
  <p>I've posted my code on jsFiddle at <a href="http://jsfiddle.net/jCNcv/" rel="noreferrer">http://jsfiddle.net/jCNcv/</a>. If you try dragging the top item down, you can see that the empty placeholder under the drag position is only tall enough for a single row.</p>