jqQuery Toggle with class?

jqQuery Toggle with class?

  1. <body>
  2.  
  3. <h3 class="panel-button">Toggle 'em</h3>
  4. <div class="panel-content" style="display: none">Hiya<br>
  5. Such interesting text, eh?</div>
  6.  

  7. <script>
  8. $( "h3" ).click(function() {
  9.   $( "panel-content" ).toggle( "slow" );
  10. });
  11. </script>
Thats my code (without including jQuery in head. It don't work yet,