<?PHP
  error_reporting(E_ALL);
  
  class Navigation {
  
          var core) {
                  core;
          }
          
          function includePage () {
          
                  if (isset($\_GET[\text{'}Page\text{'}]))\; \{$page = $\_GET[\text{'}Page\text{'}];\; \}\; else\; \{$page = "";
                  }
                          
                  switch($page)\; \{\; case\; \text{'}Start\text{'}:$page = 'start.php';
                                          break;
                          case 'RSS':
                                          $page\; =\; \text{'}rss.php\text{'};\; break;\; case\; \text{'}Login\text{'}:$page = 'login.php';
                                          break;
                          case 'loginresend':
                                          $page\; =\; \text{'}loginresend.php\text{'};\; break;\; case\; \text{'}CatOverview\text{'}:$page = 'cat_overview.php';
                                          break;
                          case 'ArticleView':
                                          $page\; =\; \text{'}article\_view.php\text{'};\; break;\; case\; \text{'}AudioView\text{'}:$page = 'audio_view.php';
                                          break;
                          case 'PictureView':
                                          $page\; =\; \text{'}picture\_view.php\text{'};\; break;\; case\; \text{'}VideoView\text{'}:$page = 'video_view.php';
                                          break;
                          case 'Disclaimer':
                          case 'About':
                                          $page\; =\; \text{'}aboutus.php\text{'};\; break;\; case\; \text{'}Register\text{'}:$page = 'register.php';
                                          break;
                          case 'Emailconf':
                                          $page\; =\; \text{'}emailconf.php\text{'};\; break;\; case\; \text{'}Useredit\text{'}:$page = 'useredit.php';
                                          break;
                          case 'Userconfirmation':
                                          $page\; =\; \text{'}userconfirmation.php\text{'};\; break;\; case\; \text{'}Search\text{'}:$page = 'search.php';
                                          break;
                          case 'AdvancedSearch':
                                          $page\; =\; \text{'}advancedsearch.php\text{'};\; break;\; case\; \text{'}AdvancedSearchResults\text{'}:$page = 'advancedsearchresults.php';
                                          break;
                          default:
                                          $page\; =\; \text{'}start.php\text{'};\; \}\; return$page;
          }
  
  }
  ?>