jQuery hide() works, but show() does not
<p>I'm having trouble getting this script to work.</p>

<pre><code>  &lt;asp:DropDownList CssClass="workUnit" Width=80 ID="dropdownWorkUnit" runat="server" Visible="false" _clientId="comboboxWorkUnit" /&gt;
</code></pre>

<p>For some reason, the combobox will not become visible when I run this JavaScript.</p>

<pre><code>onPhaseChange: function(dropdown, row) {
    var combobox = $(dropdown);
    comboboxWorkUnit = row.find("select.workUnit");
    comboboxWorkUnit.show();
},
</code></pre>

<p>But when I do this, it works:</p>

<pre><code>onPhaseChange: function(dropdown, row) {
    var combobox = $(dropdown);
    comboboxWorkUnit = row.find("select.workUnit");
    comboboxWorkUnit.hide();
},
</code></pre>
