page excerpt hack

<?php
//'excerpt' for pages//alchymyth 2011//fix for pages with <!--nextpage--> //
if(  $numpages >1 || end(explode('/',get_permalink($post->ID))) == end(explode('/',wp_get_referer())) ) :

the_content();

else :

$length = 120; //set length in words
$text = get_the_content('');
    $text = apply_filters('the_content', $text);
    $text = str_replace(']]>', ']]&gt;', $text);
$text = strip_shortcodes( $text );
$text = strip_tags($text);
$words = explode(' ', $text, $length+1 );
  if (count($words)> $length) {
    array_pop($words);
    $text = implode(' ', $words);
  } else {
    $text = implode(' ', $words);
  }
$text = apply_filters('the_content', $text);

echo $text;
echo '<a href="' . get_permalink($post->ID) . '">continue reading...</a>';

endif; ?>