title: Open close div with on click
body: <p>I have a function that o'clock open and ( should) close a series of div.
  Let's say its' an accordion.</p>
  
  <pre><code>&lt;div class="cat_table_header" onclick="show_hide_table(this);"&gt;
  </code></pre>
  
  <p>The problem is that the first div of this accordion starts always visible, and I would like that this starts closed.
  Also if I click it, doesn't close, but if I click another div it closes and open the clicked div.</p>
  
  <p>Any suggestion?</p>