<?php
// File: $Id: xhtml.php,v 1.5.2.1 2002/03/23 11:21:20 jgm Exp $
// ----------------------------------------------------------------------
// POST-NUKE Content Management System
// Copyright (C) 2001 by the Post-Nuke Development Team.
// http://www.postnuke.com/
// ----------------------------------------------------------------------
// Based on:
// PHP-NUKE Web Portal System - http://phpnuke.org/
// Thatware - http://thatware.org/
// ----------------------------------------------------------------------
// LICENSE
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License (GPL)
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// To read the license please visit http://www.gnu.org/copyleft/gpl.html
// ----------------------------------------------------------------------
// Original Author of file: Matt Jarjoura <mjarjo1@umbc.edu>
// Purpose of file: Introduce XHTML into system without breaking compat.
// ----------------------------------------------------------------------



/* Sends the three types of standard xhtml headers out
 * 
 * $type: [0] Transitional, [1] Frameset, [2] Strict
 *
 * While Frameset would rarely be used, the goal is to reach Strict
 */
function xhtml_head_start($type) {

    $xhtmloptions['encoding'] = "iso-8859-1"; /* Western Europe */
    $xhtmloptions['language'] = "en";
 
    // You Will Need this here to not confuse some PHP systems
    //   - Some do not have the <?php requirement turned on.
    echo "<?xml version=\"1.0\" encoding=\"".$xhtmloptions['encoding']."\"?>\n";

    if ($type == 0) {
	echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 
              Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
    }
    elseif ($type == 1) {
	echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Frameset//EN\"
     	      \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd\">\n";
    }
    elseif ($type == 2) {
	echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"
              \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n";
    }
    else {
	// NOTE: Error Handling Code Here
    }

	// NOTE: add language option for function
    echo "<html xmlns=\"http://www.w3.org/1999/xhtml\" 
         xml:lang=\"".$xhtmloptions["language"]."\" 
         lang=\"".$xhtmloptions['language']."\">\n";
    echo "<head>\n";
}

/* Displays W3.org's Validator Icon to test page with compliance to
 * XHTML.
 *   NOTE: DO NOT LEAVE THIS ON FOR PRODUCTION SITES UNLESS THE ENTIRE SITE
 *         COMPLETELY CONFORMS WITHOUT ERROR.
 */
function xhtml_display_test() {
	
	echo "<hr />";
	echo "<p style=\"text-align: center;\"><b>DEBUG: </b>";
	echo "<a href=\"http://validator.w3.org/check/referer\">";
	echo "Test Page for XHTML Compliance!</a></p>";

}
?>