Description:
------------
When I try this script on a server with PHP, older then version 5 it work perfect. But when I try it on Fedora Core 4 or SME 6.5. The PHP code will not work.

Is this a version problem??

The website where page works is: dschol.barhamonline.com
click on a link and the submenu will change. This is how is should work. But when I try this with the other servers with the new version of PHP nothing happens.

Is this a bug??

I included the entire code, so you can test it on your server.

I hope that I can help you making your product even better.
Greetings, David Schol.

Reproduce code:
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?php

$home = "Welkom op het Weblog van David Schol.";



$persoonlijk = "<a href='?submenulink=pages/wiebenik.php&submenu=persoonlijk'>Wie ben ik</a> | 

<a href='?submenulink=pages/werk.php&submenu=persoonlijk'>Werk</a> | 

<a href='?submenulink=pages/cv.php&submenu=persoonlijk'>CV</a> |

<a href='?submenulink=pages/cursussen.php&submenu=persoonlijk'>Cursussen</a> |

<a href='?submenulink=pages/werkervaring.php&submenu=persoonlijk'>Werkervaring</a>";



$vakantie = "<a href='?submenulink=pages/pyreneen.php&submenu=vakantie'>Pyrene&euml;n - 2000</a> | 

<a href='?submenulink=pages/brazilie.php&submenu=vakantie'>Brazili&euml;  -2001</a> | 

<a href='?submenulink=pages/mexico.php&submenu=vakantie'>Mexico - 2002</a> |

<a href='?submenulink=pages/indonesie1.php&submenu=vakantie'>Indonesi&euml; - 2003</a> |

<a href='?submenulink=pages/indonesie2.php&submenu=vakantie'>Indonesi&euml; - 2004</a> | 

<a href='?submenulink=pages/frankrijk.php&submenu=vakantie'>Frankrijk - 2005</a>";



$ictlyceum = "<a href='?submenulink=pages/smi.php&submenu=ictlyceum'>onSMI</a> | 

<a href='?submenulink=pages/mbi.php&submenu=ictlyceum'>onMBI</a> | 

<a href='?submenulink=pages/icb.php&submenu=ictlyceum'>onICB</a>";



$contact = "<a href='?submenulink=pages/route.php&submenu=contact'>Route</a> | 

<a href='?submenulink=pages/email.php&submenu=contact'>E-mail</a> | 

<a href='?submenulink=pages/contact.php&submenu=contact'>Contact formulier</a>";

?>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<title>David's Weblog</title>

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />



<script language="JavaScript" type="text/javascript" src="scripts/basisscript.js"></script>

<link rel="stylesheet" href="/style/basisstyle.css"  type="text/css">



<script language="Javascript">

function hoogte()

{

if (self.screen) {      

        width = screen.width 

        height = screen.height 

} 

else if (self.java) {    

       var javakit = java.awt.Toolkit.getDefaultToolkit(); 

       var scrsize = javakit.getScreenSize();        

       width = scrsize.width; 

       height = scrsize.height; 

} 

else { 

width = height = '?' 

} 

var over = parseInt(height) - 185;

return over;

}

//--> 

</script> 

 



</head>

<body bgcolor="#FFFFFF" text="#000000" link="#000000" vlink="#000000" alink="#000000" 

leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">

<?php

// eigenlijk --> (pagina hoogte) min 185

$re = 768-385;

?>

<table width="100%"  border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF">

  <tr>

    <td>&nbsp;</td>

    <td width="800" height="120"><img src="images/banner.gif" width="800" height="120" /></td>

    <td>&nbsp;</td>

  </tr>

  <tr>

    <td>&nbsp;</td>

    <td width="800" height="25" bgcolor="#0033FF"><div align="center"> <span class="hoofdmenu">

	<a href="?submenu=home">Home</a> 

        | <a href="?submenu=persoonlijk">Persoonlijk</a> | <a href="?submenu=vakantie">Vakantie</a> 

        | <a href="?submenu=ictlyceum">ICT-Lyceum</a> | <a href="?submenu=gastenboek">Gastenboek</a> 

        | <a href="?submenu=contact">Contact</a> </span></div></td>

    <td>&nbsp;</td>

  </tr>

  <tr>

    <td>&nbsp;</td>

    <td width="800" height="20" bgcolor="#0099FF" class="hoofdmenu">

	  <div align="center"> 

      <span class="submenu">

      <?php

	  //if($submenu == "vakantie") { echo $vakantie; } else { echo $home; }

	  if($submenu == "persoonlijk") {

	  echo $persoonlijk; 

	  } 

	  if ($submenu == "vakantie") {

	  echo $vakantie;

	  } 

	  if ($submenu == "ictlyceum") {

	  echo $ictlyceum;

	  } 

	  if ($submenu == "contact") {

	  echo $contact;

	  } 

	  if ($submenu == null || $submenu == "home"){

	  echo $home;

	  }

	  ?>

      </span>

      </div>

	  </td>

    <td>&nbsp;</td>

  </tr>

  <tr>

    <td>&nbsp;</td>

    <td bgcolor="#CCCCCC" class="mainFrame" width="800"> 

      <iframe width="800" height="<?php echo $re; ?>" scrolling="yes" frameborder="0" 

	  src="<?php if($submenulink != null){ echo $submenulink; } else { echo 'pages/nietgevonden.php'; } ?>"></iframe> </td>

    <td>&nbsp;</td>

  </tr>

  <tr>

    <td>&nbsp;</td>

    <td width="800" height="20" bgcolor="#0099FF">

	<div align="center"><span class="submenu">

        <script language="JavaScript" type="text/javascript" class="footer">

	document.write('Het is vandaag: ' + tijd());

	</script>

            </span></div></td>

  </tr>

</table>

</body>

</html>

Expected result:
----------------
Submenu bar must change, when I click a link in the main menu (above).
It does in different versions of PHP, but not in PHP version 5 and higher.

Actual result:
--------------
Submenu bar must change, but notting happens.
It does in different versions of PHP, but not in PHP version 5 and higher.