I don't know if this will fix your problem, but it sounds like it will. And it certainly won't hurt, but you will have to make sure the template edits you make now, you also make whenever you update your forum software.
The section below is found in the navbar template for each style you use. It's the login form:
<!-- login form -->
<form action="http://forum.url-here.com/login.php?do=login" method="post" onsubmit="md5hash(vb_login_password, vb_login_md5password, vb_login_md5password_utf, $show[nopasswordempty])">
<script type="text/javascript" src="http://forum.url-here.com/clientscript/vbulletin_md5.js?v=$vboptions[simpleversion]"></script>
<table cellpadding="0" cellspacing="$stylevar[formspacer]" border="0">
<tr>
<td class="smallfont" style="white-space: nowrap;"><label for="navbar_username">$vbphrase[username]</label></td>
<td><input type="text" class="bginput" style="font-size: 11px" name="vb_login_username" id="navbar_username" size="10" accesskey="u" tabindex="101" value="$vbphrase[username]" onfocus="if (this.value == '$vbphrase[username]') this.value = '';" /></td>
<td class="smallfont" nowrap="nowrap"><label for="cb_cookieuser_navbar"><input type="checkbox" name="cookieuser" value="1" tabindex="103" id="cb_cookieuser_navbar" accesskey="c" />$vbphrase[remember_me]</label></td>
</tr>
<tr>
<td class="smallfont"><label for="navbar_password">$vbphrase[password]</label></td>
<td><input type="password" class="bginput" style="font-size: 11px" name="vb_login_password" id="navbar_password" size="10" tabindex="102" /></td>
<td><input type="submit" class="button" value="$vbphrase[log_in]" tabindex="104" title="$vbphrase[enter_username_to_login_or_register]" accesskey="s" /></td>
</tr>
</table>
<input type="hidden" name="s" value="$session[sessionhash]" />
<input type="hidden" name="securitytoken" value="$bbuserinfo[securitytoken]" />
<input type="hidden" name="do" value="login" />
<input type="hidden" name="vb_login_md5password" />
<input type="hidden" name="vb_login_md5password_utf" />
</form>
<!-- / login form -->
The part I added is this: http://forum.url-here.com/. You should edit that part to reflect the actual URL to your forum home page. If your forum is located at http://forums.jasonchua.com/, then that is what you put in place of the red part I added. If your forum home is located here: http://www.thefloorpro.com/community/ then that's what you replace the red part with. If you have a problem, then check the address in the code again. It works if you type in the correct path to your forum home page. Don't forget any of the slashes.
I hope that helps. If it fixed your problem, please see my signature. Thank you.
Jim McClain
Hi Jim,
The code is already there in the first page. Thanks for your help anyway ;)