wp_login_form(array(
'echo' => true,
'remember' => true,
'redirect' => ( is_ssl() ? 'https://' : 'https://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'],
'form_id' => 'loginform',
'id_username' => 'user_login',
'id_password' => 'user_pass',
'id_remember' => 'rememberme',
'id_submit' => 'wp-submit',
'label_username' => __( 'Username' ),
'label_password' => __( 'Password' ),
'label_remember' => __( 'Remember Me' ),
'label_log_in' => __( 'Log In' ),
'value_username' => '',
'value_remember' => false
));
using this function in both popup form and in page. works fine in page but not in popup