Drupal7: embed site contact form in the node template

drupal-contact-embed-template.php

<?php
  //render site contact form on the contact-us page [put this code in your node.tpl.php where you want the form to appear]
    if($node->nid == 4) {
      require_once drupal_get_path('module', 'contact') .'/contact.pages.inc';
      $contact_form = drupal_get_form('contact_site_form');
      print drupal_render($contact_form);
    }
?>