function first_post($format = true,$published){
 $q = mysqli_query($GLOBALS["dblink"], "SELECT title,title_markup,permalink FROM wp_posts WHERE published < '".$published."' AND post_status = 'publish' ORDER BY published ASC LIMIT 1");
 if(mysqli_num_rows($q)>0){
  while($arr = mysqli_fetch_array($q)){
   $uri = $arr['permalink'];
   return ($format) ? "\n".'<link rel="first" href="'.$uri.'" title="'.htmlspecialchars($arr['title']).'">'."\n" : '<a href="'.$uri.'" rel="first">'.$arr['title_markup'].'</a>';
  }
 }else{
  return "\n";
 }
}

function prev_post($format = true,$published){
 $q = mysqli_query($GLOBALS["dblink"], "SELECT title,title_markup,permalink FROM wp_posts WHERE published < '".$published."' AND post_status = 'publish' ORDER BY published DESC LIMIT 1");
 if(mysqli_num_rows($q)>0){
  while($arr = mysqli_fetch_array($q)){
   $uri = $arr['permalink'];
   return ($format) ? '<link rel="prev" href="'.$uri.'" title="'.htmlspecialchars($arr['title']).'">'."\n" : '<a href="'.$uri.'" rel="prev">'.$arr['title_markup'].'</a>';
  }
 }
}

function next_post($format = true,$published){
 $now = gmdate('Y-m-d H:i:s',time());
 $q = mysqli_query($GLOBALS["dblink"], "SELECT title,title_markup,permalink FROM wp_posts WHERE published > '".$published."' AND published < '".$now."' AND post_status = 'publish' ORDER BY published ASC LIMIT 1");
 if(mysqli_num_rows($q)>0){
  while($arr = mysqli_fetch_array($q)){
   $uri = $arr['permalink'];
   return ($format) ? '<link rel="next" href="'.$uri.'" title="'.htmlspecialchars($arr['title']).'">'."\n" : '<a href="'.$uri.'" rel="next">'.$arr['title_markup'].'</a>';
  }
 }
}

function last_post($format = true,$published){
 $q = mysqli_query($GLOBALS["dblink"], "SELECT title,title_markup,permalink FROM wp_posts WHERE published > '".$published."' AND post_status = 'publish' ORDER BY published DESC LIMIT 1");
 if(mysqli_num_rows($q)>0){
  while($arr = mysqli_fetch_array($q)){
   $uri = $arr['permalink'];
   return ($format) ? '<link rel="last" href="'.$uri.'" title="'.htmlspecialchars($arr['title']).'">'."\n" : '<a href="'.$uri.'" rel="last">'.$arr['title_markup'].'</a>';
  }
 }
}