SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<table>

<tr>
<td>
<button class="shownextrow">Show Next Row</button>
</td>
</tr>

<tr style="display:none">
    <td>
        <input type="text" name="input"/>
    </td>
</tr>

</table>

JavaScript

$("button.shownextrow").click(function() { 
  $(this).closest("tr").next().show();
});