problems trying to use PHP to choose CSS

Hello PHP friends I went searching (Core PHP Programm, php.net and google) for an answer, but didn't find anything that did what I want, namely: Use PHP to set the style sheet for a site. I am trying this method: Register a global variable ($CSS) using a FORM. Currently this does not work at all in Internet Explorer ver6. It does work in Mozilla 0.99 and Opera v6, but ONLY for page when it reloads... as soon as I go to another page, the $CSS variable seems to get reset to 'global' I wonder if I am not doing something stupid/overlooking something obvious, but I am very new @ PHP so that is possible. I have attached my various code snippets here. // in my global PHP file // Now what I am trying to do here is set a default that should ONLY be // used if the $CSS variable is NOT already set if (!isset($CSS)) { // if it is not set, then and only then set it and define it session_start(); session_register("CSS"); $CSS="global"; } // in my global header file: // this should take the variable $CSS and use it for the style sheet // yes the .css should be appended to the $CSS echo <<< EOD <link type="text/css" rel="stylesheet" href="/global/css/$CSS.css" /> EOD; //in my global footer file // here is where we set the variable by the FORM and reload the page echo <<< EOD <div style="text-align: right"> <form action="$PHP_SELF" method="post"> <p>Choose style: <select name="CSS"> <option value="default" selected="selected">Default</option> <option value="smaller">Smaller</option> <option value="tamecolors">Tamer Colors</option> <option value="print">Print</option> </select> <input alt="Set Style" type="submit" name="Set Style" value="Set Style" /> </p> <p>Current style is: <strong>$CSS</strong></p> </form> </div> EOD; Any help appreciated.... Thanks TjL -- Site: www.tntluoma.com mailto:luomat@peak.org Info: Apache/1.3.19 (Unix) with PHP/4.0.6