Next page and Previous page links

Hi I am building a gallery Porfolio site using wordpress as a cms for static pages and i am going to include Next and Previous Links to the pages. Is there a way to script this or do I have to link each Page individually.

I found this but i am not quite sure if this is what I am Looking for or how to implement it properly.

`<?php

/**
* New function that will display the navigation only if a previous or next page exists
* Hint: For pages, next == older and previous == newer
*/
function posts_navigation($next_label=’« Older Entries’, $previous_label=’Newer Entries »’, $max_page=0) {
$older = theme_next_posts_link($next_label);
$newer = theme_previous_posts_link($previous_label);

if(strlen($older) > 0 || strlen($newer) > 0) {
echo “<div class=’navigation’>”;
echo “<span class=’older’>”.$older.”</span>”;
echo “<span class=’newer’>”.$newer.”</span>”;
echo “</div>”;
}
}

/**
* New function that will display the navigation only if a previous or next entry exists
* Hint: For entries, next == newer and previous == older
*/
function post_navigation($format=’%link’, $next_link=’%title »’, $previous_link=’« %title’, $in_same_cat = false, $excluded_categories = ”) {
$older = theme_previous_post_link($format, $previous_link);
$newer = theme_next_post_link($format, $next_link);

if(strlen($older) > 0 || strlen($newer) > 0) {
echo “<div class=’navigation’>”;
echo “<span class=’older’>”.$older.”</span>”;
echo “<span class=’newer’>”.$newer.”</span>”;
echo “</div>”;
}
}

/**
* Overrides the WordPress next_posts() function in link-template.php
* Modification: Changed echo to return
*/
function theme_next_posts($max_page = 0) {
return clean_url(get_next_posts_page_link($max_page));
}

/**
* Overrides the WordPress next_posts_link() function in link-template.php
* Modification:
* – Removed echo’s
* – Added a $next_posts_link variable
* – Calls overridden next_posts() function, theme_next_posts()
* – Returns the $next_posts_link value
*/
function theme_next_posts_link($label=’Next Page »’, $max_page=0) {
global $paged, $wpdb, $wp_query;
$next_posts_link = ”;
if ( !$max_page ) {
$max_page = $wp_query->max_num_pages;
}
if ( !$paged )
$paged = 1;
$nextpage = intval($paged) + 1;
if ( (! is_single()) && (empty($paged) || $nextpage <= $max_page) ) {
$next_posts_link .= ‘<a href=”‘;
$next_posts_link .= theme_next_posts($max_page);
$next_posts_link .= ‘”>’. preg_replace(‘/&([^#])(?![a-z]{1,8};)/’, ‘&$1’, $label) .”;
}
return $next_posts_link;
}

/**
* Overrides the WordPress previous_posts() function in link-template.php
* Modification: Changed echo to return
*/
function theme_previous_posts() {
return clean_url(get_previous_posts_page_link());
}

/**
* Overrides the WordPress previous_posts_link() function in link-template.php
* Modification:
* – Removed echo’s
* – Added a $previous_posts_link variable
* – Calls overridden previous_posts() function, theme_previous_posts()
* – Returns the $previous_posts_link value
*/
function theme_previous_posts_link($label=’« Previous Page’) {
global $paged;
$previous_posts_link = ”;
if ( (!is_single()) && ($paged > 1) ) {
$previous_posts_link .= ‘<a href=”‘;
$previous_posts_link .= theme_previous_posts();
$previous_posts_link .= ‘”>’. preg_replace(‘/&([^#])(?![a-z]{1,8};)/’, ‘&$1’, $label) .”;
}
return $previous_posts_link;
}

/**
* Overrides the WordPress previous_post_link() function in link-template.php
* Modification: Changed echo to return
*/
function theme_previous_post_link($format=’« %link’, $link=’%title’, $in_same_cat = false, $excluded_categories = ”) {

if ( is_attachment() )
$post = & get_post($GLOBALS[‘post’]->post_parent);
else
$post = get_previous_post($in_same_cat, $excluded_categories);

if ( !$post )
return;

$title = $post->post_title;

if ( empty($post->post_title) )
$title = __(‘Previous Post’);

$title = apply_filters(‘the_title’, $title, $post);
$string = ‘ID).'”>’;
$link = str_replace(‘%title’, $title, $link);
$link = $pre . $string . $link . ‘‘;

$format = str_replace(‘%link’, $link, $format);

return $format;
}

/**
* Overrides the WordPress next_post_link() function in link-template.php
* Modification: Changed echo to return
*/
function theme_next_post_link($format=’%link »’, $link=’%title’, $in_same_cat = false, $excluded_categories = ”) {
$post = get_next_post($in_same_cat, $excluded_categories);

if ( !$post )
return;

$title = $post->post_title;

if ( empty($post->post_title) )
$title = __(‘Next Post’);

$title = apply_filters(‘the_title’, $title, $post);
$string = ‘ID).'”>’;
$link = str_replace(‘%title’, $title, $link);
$link = $string . $link . ‘‘;
$format = str_replace(‘%link’, $link, $format);

return $format;
}

?>`