[RESOLVED] Simple if, else statement question?

I have the following code that is not working. Basically depending on which page is selected, it changes which link is active. The only problem is this only works if I am viewing the index.php. Any Help

[code=php]<?php
$pid = $_GET[‘pid’];
if ($pid == 01 || $pid = “”)
echo “<li class=’active’><a href=’index.php?pid=01′>Home</a></li>”;
else
echo “<li><a href=’index.php?pid=01′>Home</a></li>”;
if ($pid == 02)
echo “<li class=’active’><a href=’businesses.php?pid=02′>Area Businesses</a>
<ul>
<li><a href=’businesses.php?pid=02′>Businesses</a></li>
<li><a href=’churches.php?pid=04′>Churches</a></li>
</ul>
</li>”;
else
echo “<li><a href=’businesses.php?pid=02′>Area Businesses</a>
<ul>
<li><a href=’businesses.php?pid=02′>Businesses</a></li>
<li><a href=’churches.php?pid=04′>Churches</a></li>
</ul>
</li>”;
if ($pid == 05)
echo “<li class=’active’><a href=’schools.php?pid=05′>Schools</a>
<ul>
<li><a href=’#’>Elementry School</a></li>
<li><a href=’#’>Middle School</a></li>
<li><a href=’#’>High School</a></li>
</ul>
</li>”;
else
echo “<li><a href=’schools.php?pid=05′>Schools</a>
<ul>
<li><a href=’#’>Elementry School</a></li>
<li><a href=’#’>Middle School</a></li>
<li><a href=’#’>High School</a></li>
</ul>
</li>”;
if ($pid == 06)
echo “<li class=’last; active’><a href=’events.php?pid=06′>Events</a></li>”;
else
echo “<li class=’last’><a href=’events.php?pid=06′>Events</a></li>”;
?>[/code]

I am probably just missing something simple, so I need a second or third set of eyes on it.

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