WordPress pretty Pagination with first/last, next/prev and range parameters above/below current page

pagination.php

<?php
 	/**
	 * Wordpress pagination for archives/search/etc.
	 * 
	 * @author: Franz Josef Kaiser [http://say-hello-code.com]
	 * 
	 * Semantically correct pagination inside an unordered list
	 * 
	 * Displays: First « 1 2 3 4 » Last
	 * First/Last only appears if not on first/last page
	 * Shows next/previous links «/»
	 * Accepts a range attribute (default = 5) to adjust the number
	 * of direct page links that link to the pages above/below the current one.
	 * 
	 * @param (int) $range
	 */
	function oxo_pagination( $range = 5 ) {
		// $paged - number of the current page
		global $paged, $wp_query;
		// How much pages do we have?
		if ( !$max_page )
			$max_page = $wp_query->max_num_pages;
		// We need the pagination only if there is more than 1 page
		if ( $max_page > 1 )
			if ( !$paged ) $paged = 1;

		echo "\n".'<ul>'."\n";
		// On the first page, don't put the First page link
		if ( $paged != 1 )
			echo '<li><a href='.get_pagenum_link(1).'>'.__('First', CHILD_LANG).' </a></li>';

		// To the previous page
		echo '<li>';
			previous_posts_link(' &laquo; '); // «
		echo '</li>';

		// We need the sliding effect only if there are more pages than is the sliding range
		if ( $max_page > $range ) :
			// When closer to the beginning
			if ( $paged < $range ) :
				for ( $i = 1; $i <= ($range + 1); $i++ ) {
					$class = $i == $paged ? 'current' : '';
					echo '<li><a href="'.get_pagenum_link($i).'" class="paged-num '.$class.'"> '.$i.' </a></li>';
				}
			// When closer to the end
			elseif ( $paged >= ( $max_page - ceil($range/2)) ) :
				for ( $i = $max_page - $range; $i <= $max_page; $i++ ){
					$class = $i == $paged ? 'current' : '';
					echo '<li><a href="'.get_pagenum_link($i).'" class="paged-num '.$class.'"> '.$i.' </a></li>';
				}
			endif;
		// Somewhere in the middle
		elseif ( $paged >= $range && $paged < ( $max_page - ceil($range/2)) ) :
			for ( $i = ($paged - ceil($range/2)); $i <= ($paged + ceil($range/2)); $i++ ) {
					$class = $i == $paged ? 'current' : '';
				echo '<li><a href="'.get_pagenum_link($i).'" class="paged-num '.$class.'"> '.$i.' </a></li>';
			}
		// Less pages than the range, no sliding effect needed
		else :
			for ( $i = 1; $i <= $max_page; $i++ ) {
				$class = $i == $paged ? 'current' : '';
				echo '<li><a href="'.get_pagenum_link($i).'" class="paged-num '.$class.'"> '.$i.' </a></li>';
			}
		endif;

		// Next page
		echo '<li>';
			next_posts_link(' &raquo; '); // »
		echo '</li>';

		// On the last page, don't put the Last page link
		if ( $paged != $max_page )
			echo '<li><a href='.get_pagenum_link($max_page).'> '.__('Last', CHILD_LANG).'</a></li>';

		echo "\n".'</ul>'."\n";
	}
?>