<?php
function check($section) { echo basename($_SERVER['PHP_SELF'] == $section ? 'class="active"' : ''); }
?>
<div id="header">
  <ul id="nav">
    <li><a href="index.php"<?php echo check('index.php');?>>HOME</a></li>
    <li><a href="about.php"<?php echo check('about.php');?>>ABOUT</a></li>
    <li><a href="about.php"<?php echo check('projects.php');?>>PROJECTS</a></li>
    <li><a href="irrigation.php" <?php echo check('irrigation.php');?>>IRRIGATION</a></li>
    <li><a href="news.php" <?php echo check('news.php');?>>NEWS</a></li>
    <li id="last"><a href="contact.php" <?php echo check('contact.php');?>>CONTACT</a></li>
  </ul>
  <div id="logo"><a href="index.php"><img src="img/botanical-visions-inc.png" width="213" height="111" alt="Botanical Visions Inc."/></a></div>

</div>