Tente este formulario. <center>
<form name=login>
<table width=225 border=0 cellpadding=3 height="123">
<tr><td colspan=2 height="13"><center>
<p><font face="Arial Black">Área restrita:</font></p>
</center></td></tr>
<tr><td height="22">
<font face="Verdana" style="password font-weight:700">Detetive:</font></td>
<td height="22" align="center">
<input type="text" name="username" size="17" /></td></tr>
<tr><td height="22"> <font face="Verdana" style="password font-weight:700">Senha:</font></td><td height="22">
<input type="text" name="password" size="17" /></td></tr>
<tr><td colspan=2 align=center height="26"><input type="button" value="Sou um detetive" onclick="Login()" /></td></tr>
</table>
</form>
</center>
<p>
<p align="center" style="margin-top: 0; margin-bottom: 0"> </p></p>