PHP if/else switch not working

[duwek]

Goal:Trying to get a rollover button state to remain "ON" when URL equals "enhanced.php".Problem:Button state does not remain "on" when URL equals "enhanced.php". (Button acts correctly as a rollover)sidemenu.php sidemenu.php is used as a PHP include on all pages (I don't know if that makes a difference\[code\]<?php$script = $_SERVER['SCRIPT_NAME'];//Set the default state to OFF and only turn ON if we are on the current URL.$enhancedstate = OFF;$pos = strpos($script, "enhanced.php");if($pos === true) {$enhancedstate = ON;}?> <div class="sideMenu"> <a href="http://stackoverflow.com/questions/3825890/enhanced.php" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('Image1','','/images/Button_ON_01.gif',1)"> <img src="http://stackoverflow.com/images/Button_<? echo $enhancedstate; ?>_01.gif" name="Image1" border="0"> </a>\[/code\]Anyone see any reason why the button state does not stay "ON" when the current URL is "enhanced.php".TIA