/*
 * For a help in persian go to http://www.tokhmeh.com?p=399
 */
function page_navigation($before='', $after='', $prelabel='« ', $nxtlabel=' »') {
	global $p, $what_to_show, $request, $posts_per_page, $wpdb, $paged;
	global $querystring_start, $querystring_equal, $querystring_separator;
	if (empty($p) && ($what_to_show == 'paged')) {
		$nxt_request = $request;
		$whichpage = $_GET['paged'];
		if(empty($whichpage))  $whichpage = 1;
		$qstr = $_SERVER['QUERY_STRING'];
		if (!empty($qstr)) {
			$qstr = preg_replace("/&paged=\d{0,}/","",$qstr);
			$qstr = preg_replace("/paged=\d{0,}/","",$qstr);
         } elseif (stristr($_SERVER['REQUEST_URI'], $_SERVER['SCRIPT_NAME'] )) {
			if ('' != $qstr = str_replace($_SERVER['SCRIPT_NAME'], '', $_SERVER['REQUEST_URI']) ) {
				$qstr = preg_replace("/^\//", "", $qstr);
				$qstr = preg_replace("/paged\/\d{0,}\//", "", $qstr);		
				$qstr = preg_replace("/paged\/\d{0,}/", "", $qstr);
				$qstr = preg_replace("/\/$/", "", $qstr);
			}
		}
		if ($pos = strpos(strtoupper($request), 'LIMIT')) {
			$nxt_request = substr($request, 0, $pos);
		}
		$nxt_result = $wpdb->query($nxt_request);
		$numposts = $wpdb->num_rows;
		$max_page = ceil($numposts / $posts_per_page) ;

		echo $before.'Pages ('.$max_page.') : <b>';
		if ($whichpage >= 4)
			echo '<a href="'.get_settings('home').'/'.get_settings('blogfilename').$querystring_start.($qstr == '' ? '' : $qstr.$querystring_separator) .'paged'.$querystring_equal.'1">&laquo; First</a> ... ';
		previous_posts_link($prelabel);
		for($i = $whichpage - 2 ; $i  <= $whichpage +2; $i++) {
			if ($i >= 1 && $i <= $max_page) {
				if($i == $whichpage) 
					echo '['.$i.'] ';
				else
					echo '<a href="'.get_settings('home').'/'.get_settings('blogfilename').$querystring_start.($qstr == '' ? '' : $qstr.$querystring_separator) .'paged'.$querystring_equal.$i.'">'.$i.'</a> ';
			}
		}
		next_posts_link($nxtlabel, $max_page);
		if (($whichpage+2) < ($max_page))
			echo ' ... <a href="'.get_settings('home').'/'.get_settings('blogfilename').$querystring_start.($qstr == '' ? '' : $qstr.$querystring_separator) .'paged'.$querystring_equal.$max_page.'">Last &raquo;</a>';
		echo '</b>'.$after;
	}