gistfile1.txt

function easyrotator_update_search_content($content)
{
   if (is_search())
   {
      $content = preg_replace_callback('|(<!-- Begin DWUser_EasyRotator -->)(.*?)(<!-- End DWUser_EasyRotator -->)|si', 'easyrotator_update_search_content_callback', $content);
   }
   return $content;
}

function easyrotator_update_search_content_callback($matches)
{
   $content = $matches[2];
   preg_match('|<img.*?\ssrc="([^"]+)".*?/?>|si', $content, $submatches);
   return $matches[1] . $submatches[0] . $matches[3];
}

add_filter('the_content', 'easyrotator_update_search_content', 1000);
add_filter('the_excerpt', 'easyrotator_update_search_content', 1000);