de-drupalizing-the-login-form.php

<?php
/**
 * Implements hook_preprocess_HOOK().
 *
 */
function MYTHEME_preprocess_html(&$vars) {
  // Fixes page titles for login, register & password.
  switch (current_path()) {
    case 'user':
      $vars['head_title_array']['title'] = t('Login');
      $head_title = $vars['head_title_array'];
      $vars['head_title'] = implode(' | ', $head_title);
      break;
    case 'user/register':
      $vars['head_title_array']['title'] = t('Create new account');
      $head_title = $vars['head_title_array'];
      $vars['head_title'] = implode(' | ', $head_title);
      break;
    case 'user/password':
      $vars['head_title_array']['title'] = t('Request new password');
      $head_title = $vars['head_title_array'];
      $vars['head_title'] = implode(' | ', $head_title);
      break;

    default:
      break;
  }
}

/**
 * Implements hook_preprocess_HOOK().
 *
 */
function MYTHEME_preprocess_page(&$vars) {
  /**
  * Removes the tabs from user  login, register & password. Also fixes page titles
  */
  switch (current_path()) {
    case 'user':
      $vars['title'] = t('Login');
      unset($vars['tabs']['#primary']);
      break;
    case 'user/register':
      $vars['title'] = t('Create new account');
      unset($vars['tabs']['#primary']);
      break;
    case 'user/password':
      $vars['title'] = t('Request new password');
      unset($vars['tabs']['#primary']);
      break;

    default:
      break;
  }
}

/**
* Implements hook_form_FORM_ID_alter()
*
**/
function MYTHEME_form_user_login_alter(&$form, &$form_state, $form_id) {
  $actions_suffix = '<div class="actions-suffix">';
  $actions_suffix .= l(t('Request new password'), 'user/password', array('attributes' => array('class' => 'btn-login-password', 'title' => t('Get a new password'))));
  if (user_register_access()):
    $actions_suffix .= l(t('Create new account'), 'user/register', array('attributes' => array('class' => 'btn-login-register', 'title' => t('Create a new user account'))));
  endif;
  $actions_suffix .= '</div>';
  $form['actions']['#suffix'] = $actions_suffix;
}