<form action="http://feedburner.google.com/fb/a/mailverify" method="post" onsubmit="window.open(&quot;http://feedburner.google.com/fb/a/mailverify?uri=YOUR_FEEDBURNER_ID&quot;, &quot;popupwindow&quot;, &quot;scrollbars=yes,width=550,height=520&quot;); return true" target="popupwindow">
<table width="100%">
<tbody><tr>
<td>
<input class="follow-by-email-address" name="email" placeholder="Enter Email Address" type="email" required="required" />
</td>
<td width="64px">
<input  class="follow-by-email-submit" type="submit" value="Subscribe" />
</td>
</tr>
</tbody></table>
<input name="uri" type="hidden" value="YOUR_FEEDBURNER_ID" />
<input name="loc" type="hidden" value="en_US" />
</form>