wp: header title

gistfile1.html

<!-- Title Credit: http://perishablepress.com/how-to-generate-perfect-wordpress-title-tags-without-a-plugin/ -->
<title>
  <?php if (function_exists('is_tag') && is_tag()) { 
    echo 'Tag Archive for &quot;'.$tag.'&quot; — '; 
    }
    elseif (is_archive()) {
      wp_title(''); echo ' Archive — ';
    }
    elseif (is_search()) {
      echo 'Search for &quot;'.wp_specialchars($s).'&quot; — ';
    }
    elseif (!(is_404()) && (is_single()) || (is_page())) {
      wp_title(''); echo ' — ';
    }
    elseif (is_404()) {
      echo 'Not Found — ';
    }
    if (is_home()) {
      bloginfo('name'); echo ' — '; bloginfo('description');
    }
  else { bloginfo('name'); } ?>
</title>