slideDown effect issue
<p>This Jquery works fine</p>

<pre><code>$(row).hide().insertAfter($("#imgDiminui_" + Id).closest("tr")).fadeIn("slow");
</code></pre>

<p>This don't work</p>

<pre><code>$(row).hide().insertAfter($("#imgDiminui_" + Id).closest("tr")).slideDown("slow");
</code></pre>

<p>Why a <code>slideDown</code> effect doesn't work ?</p>
