[solved]Navigation Menu - loading other pages?

[eluser]brucebat[/eluser]
That is not working though it is saying this:

<h4>A PHP Error was encountered</h4>
<p>Severity: Warning</p>
<p>Message: Division by zero</p>
<p>Filename: includes/nav.php</p>
<p>Line Number: 9</p>

==============================

<h4>A PHP Error was encountered</h4>
<p>Severity: Notice</p>
<p>Message: Use of undefined constant �Login� - assumed '�Login�'</p>
<p>Filename: includes/nav.php</p>
<p>Line Number: 9</p>

==============================

<h4>A PHP Error was encountered</h4>
<p>Severity: Notice</p>
<p>Message: Use of undefined constant �controller - assumed '�controller'</p>
<p>Filename: includes/nav.php</p>
<p>Line Number: 9</p>

==============================

<h4>A PHP Error was encountered</h4>
<p>Severity: Notice</p>
<p>Message: Use of undefined constant site - assumed 'site'</p>
<p>Filename: includes/nav.php</p>
<p>Line Number: 9</p>

====================


Then when I click on the link I get a strange url

Code:

http://localhost/midas/<div style=