title: jQuery: find next table-row
body: <p>I have a table, containing rows, contaning cells - and some of them contain an img as follows:</p>
  
  <pre><code>&lt;img id="FormView1_btnSave_row1%1%new" style="border-width: 0px; cursor: pointer;"
  src="grafik/ok_16x16.gif" onclick="cleverStuff(this)"/&gt;
  </code></pre>
  
  <p>In the function cleverStuff I would like to operate on the line that follows the line in which the button was clicked - this special button is contained in the last visible line only, there are a bunch of hidden lines below and I want to make the first hidden line visible - but I fail at getting to the next line.
  My understanding was that all combination of <code>parent()</code> and <code>next()</code> could be used to get from the img to the td, to the tr and finally to the next tr.
  So I tried to verify this:</p>
  
  <p><code>$(ctrl).attr('id')</code> correctly returns the img's id :)</p>
  
  <p><code>$(ctrl).parent().attr('id')</code> returns NULL.</p>
  
  <p>What am I missing here?</p>