<?php
$pageArray=explode("/",$_SERVER['REQUEST_URI']);
$pageCount=count($pageArray);
$page=$pageArray[$pageCount-1];
$page=explode(".php",$page);
$page=$page[0];
?>

<div id="tabs">
  <div class="container">
<ul>

<li><a href="marketing.php" <?php if(($page=='marketing')||($page=='')||($page==''))echo 'class="current"';?>><span>Introduction</span></a></li>

<li><a href="marketing1.php" <?php if(($page=='marketing1')||($page==''))echo 'class="current"';?>><span>Category</span></a></li>

<li><a href="marketing2.php" <?php if(($page=='marketing2')||($page==''))echo 'class="current"';?>><span>Category Description</span></a>
</li>

<li><a href="marketing3.php" <?php if(($page=='marketing3')||($page=='marketing3Edit'))echo 'class="current"';?>><span>Blog</span></a>
</li>

    </ul>
  </div>
</div>