function printLoginForm($authenticators, $authenticator, $class, $redirect = "")
{
    if ($authenticator == gCOSI_AUTH_METHOD_SHIBBOLETH) {
        print "<div class='" . $class . "' id='" . $authenticator . "_LoginForm'>";
        print "<small>Log into the ANDS Online Services Dashboard using your AAF credentials:</small>";
        print " <img src='" . asset_url('img/aaf_logo.gif', 'base') . "' style='display:block;margin:10px auto;'/>";
        print " <a href='" . secure_host_url() . gSHIBBOLETH_SESSION_INITIATOR . "?target=" . secure_base_url() . "auth/setUser' class='btn btn-primary btn-block'>Login using " . $authenticators[$authenticator] . "</a>";
        print "</div>";
    } else {
        print "<div class='" . $class . "' id='" . $authenticator . "_LoginForm'>";
        print " <form class='form' action='" . base_url("auth/login") . "' method='post'>";
        print " <input type='hidden' name='redirect' value=" . $redirect . "/>";
        print "   <div class='control-group'>";
        print "     <div class='controls'>";
        print "         <label>Username</label>";
        print "         <input type='text' id='inputUsername' name='inputUsername' placeholder='Username'>";
        print "     </div>";
        print "   </div>";
        print "   <div class='control-group'>";
        print "     <div class='controls'>";
        print "         <label>Password</label>";
        print "         <input type='password' id='inputPassword' name='inputPassword' placeholder='Password'>";
        print "     </div>";
        print "   </div>";
        print "   <div class='control-group'>";
        print "     <div class='controls'>";
        print "         <button type='submit' class='btn btn-primary btn-block'>Login using " . $authenticators[$authenticator] . "</button>";
        print "     </div>";
        print "   </div>";
        print " </form>";
        print "</div>";
    }
}
<p style="text-align:center">
	<small>Log into the ANDS Online Services Dashboard using your AAF credentials: </small>
	<img src="<?php 
echo asset_url('img/aaf_logo.gif', 'base');
?>
" alt="AAF Logo" style="display:block;margin:10px auto">
	<a 
		href="<?php 
echo secure_host_url() . gSHIBBOLETH_SESSION_INITIATOR . "?target=" . secure_base_url() . "auth/authenticate/shibboleth_sp";
?>
"
		class="btn btn-primary btn-block">
		Login using Australian Access Federation (AAF) credentials
	</a>
</p>