Feedburner html overrides phpBB login

Hello, I have a slight problem when I use the feedburner html code they provide. This is for their email subscription html, it overrides my phpBB login area. This means that when I click login for the PhpBB login, it brings up the pop-up window that is in the feedburner code. This probably has to do with the ‘form style’?

This is the code I used in the text widget:

<form style="padding:3px;text-align:center;" action="http://feedburner.google.com/fb/a/mailverify" method="post" target="popupwindow" onsubmit="window.open('http://feedburner.google.com/fb/a/mailverify?uri=pakubox/PNFQ', 'popupwindow', 'scrollbars=yes,width=550,height=520');return true">
<b><font size="5" color="black" font face="Trebuchet MS">Subscribe</font></b>
<p>Enter your email address:</p><p><input type="text" style="width:120px" name="email"/></p><input type="hidden" value="pakubox/PNFQ" name="uri"/><input type="hidden" name="loc" value="en_US"/><input type="submit" value="Subscribe" />

The PhpBB login I’m using is part of the “WP phpBB Bridge”. I don’t think the login is the problem though.

Website URL: http://www.pakubox.com/mmorpgblog/
Regards,
Ryan