title: JQuery: slide not working as expected
body: <p>This will hopefully be a simple one:
  I have a div I want to slide into the screen when the page loads.</p>
  
  <p>I'm trying to find out why this works:</p>
  
  <pre><code>$(function() {
      $('.mydiv').slideDown(500);
  });//END ONLOAD
  </code></pre>
  
  <p>But not this:</p>
  
  <pre><code>$(function() {
      $('.mydiv').show('slide', { direction: 'down' }, 500);
  });//END ONLOAD
  </code></pre>
  
  <p>Can anyone give me some advice? Thanks!</p>
  
  <p>(ps: CSS is .mydiv {display:none;}</p>