Pagina-navigatie werkt niet

<?php ini_set('display_errors',1); // 1 == aan , 0 == uit
error_reporting(E_ALL | E_STRICT);
?>

<div id="content">
      <?php 
	  //SETTING PAGINATION -->

       if (!isset($_GET['pagenum'])){ 
		 $pagenum = 1; 
	   }else{
	$pagenum = $_GET['pagenum'];
	   }
	$query = mysql_query("SELECT newsid FROM news") or die("An error has occured! ".mysql_error() .$query); 
 	$rows = mysql_num_rows($query);
	
	$page_rows = 3; 
	$last = ceil($rows/$page_rows);
	
	if ($pagenum < 1){ 
		$pagenum = 1; 
	}elseif($pagenum > $last){ 
		$pagenum = $last; 
	} 
	
	 $max = 'limit ' .($pagenum - 1) .',' .$page_rows; 
	
	echo('pagina: '.$pagenum);
	echo('rijen: '.$page_rows);
	echo('laatste: '.$last);
		?>
      <center><h1>Latest news</h1></center>
      
      <div class='news'>
        <?php
		$query= "SELECT newsid, title, newsmessage, date, newsphoto FROM news ORDER BY newsid DESC $max";
		  $resultaat = mysql_query($query) or die("An error has occured! ".mysql_error().$query);
		  while($rij= mysql_fetch_array($resultaat)){
			  //Count how many comments are given
			  $newsID = $rij['newsid']; 
			  $query2= "SELECT COUNT(id) AS countComments FROM comments WHERE newsid='".$newsID."'";
			  	$resultaat2 = mysql_query($query2) or die("An error has occured! ".mysql_error() .$query2);
		  		$rij2 = mysql_fetch_array($resultaat2);
				$countComments = $rij2['countComments'];
				
				//1 COMMENT OR MORE COMMENTS?
				if($countComments=='1'){
				$countComments="1 COMMENT";	
				}else{
				$countComments=$countComments." COMMENTS";	
				}
				
				
			$title = $rij['title'];
			$newsmessage = $rij['newsmessage'];
			$date = $rij['date'];
			$photo = $rij['newsphoto'];
			
			echo('
			<div class="newsItem">
			
			<div class="newsTitle">'.$title.'</div>
			<div class="newsInfo">'.$date.'</div>
			<div class="containerMessage">
			<img class="newsIcon" src="'.$photo.'" />
			<div class="newsMessage">'.$newsmessage.'</div>
			</div>
			<div class="newsButtons">
				<a class="button" href="#" onclick="this.blur(); return false;"><span>READ MORE</span></a>
				<a class="button" href="#" onclick="this.blur(); return false;"><span>'.$countComments.'</span></a>
				</div>
			<hr />			
			</div>');
			}
		?>
        </div>
        <div class="paginator">
		<?php
		echo ('--Page '.$pagenum.' of '.$last.'--');
		 if ($pagenum !== 1 ){
			echo ('<a href="?pagenum=1"> <<-First</a> ');
			$previous = $pagenum-1;
			echo ('<a href="?pagenum='.$previous.'"> <-Previous</a> ');
		 } 
		 
		 
		 if ($pagenum !== $last) {
			 $next = $pagenum+1;
			 echo ('<a href="?pagenum='.$next.'">Next -></a> ');
 			 echo ('<a href="?pagenum='.$last.'">Last ->></a> ');
		 }
		?>
        </div>
      </div>