JQuery Dialog show effect doesn't work, every other parameter does
<p>I have this code to popup a JQuery dialog box:</p>

<pre><code>$( "#dialogBox" ).dialog({
   height: 585,
   width: 620,  
   modal: true,
   resizable: false,    
   show: { 
     effect: 'fold', 
     complete: function() { $("#txtEmail").focus(); }
   }                                
});
</code></pre>

<p>The dialog box appears correctly except for the effect. No matter what effect I choose, the box appears the same way (grows from top left to bottom right). </p>

<p>Any ideas? Thanks.</p>
