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<li>Sitemaps</li>

<li>Link Bait</li>

<li>IP Cloaking, Geo-Targeting, and IP Delivery</li>

<li>Foreign Language SEO</li>

<li>Coping with Technical Issues</li>

<li>Case Study: Building an E-Commerce Catalog</li>

<li>Site Clinic: So You Have a Web Site?</li>

<li>: Creating a SE-Friendly Weblog?</li>

<li>Introduction to Regular Expressions</li>

</ol>

</body>

</html>

4.

Create a new file named

popup_utils.inc.php

in your

seophp/include

folder, and write

this code:

<?php

// include config file

require_once ‘config.inc.php’;

// display popup navigation only when visitor comes from a SERP

function display_popup_navigation()

{

// display navigation?

$disp_nav = false;

// if there is no REFERER (visitor loaded popup directly), display navigation

if (!isset($_SERVER[‘HTTP_REFERER’]))

{

$disp_nav = true;

}

// if the REFERER not from our domain, display navigation

else

{

// parse the REFERER and the local site using parse_url()

$parsed_referer = parse_url($_SERVER[‘HTTP_REFERER’]);

$parsed_local = parse_url(SITE_DOMAIN);

// extract the domain of the referer, and that of the local site

$referer_host = $parsed_referer[‘host’];

$local_host = $parsed_local[‘host’];

// display navigation if the REFERER URL is not from the local domain

if ($referer_host != $local_host)

{

$disp_nav = true;

}

}

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Chapter 6: SE-Friendly HTML and JavaScript

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