'; //jQuery $htmlHeadXtra[] = ''; //session if(isset($_GET['id_session'])) { $_SESSION['id_session'] = Security::remove_XSS($_GET['id_session']); } // Is the document tool visible? // Check whether the tool is actually visible $table_course_tool = Database::get_course_table(TABLE_TOOL_LIST, $_course['dbName']); $tool_sql = 'SELECT visibility FROM ' . $table_course_tool . ' WHERE name = "'. TOOL_DOCUMENT .'" LIMIT 1'; $tool_result = Database::query($tool_sql,__FILE__,__LINE__); $tool_row = Database::fetch_array($tool_result); $tool_visibility = $tool_row['visibility']; if ($tool_visibility == '0' && $to_group_id == '0' && !($is_allowed_to_edit || $group_member_with_upload_rights)) { api_not_allowed(true); } $htmlHeadXtra[] = ""; /* ----------------------------------------------------------- Variables - some need defining before inclusion of libraries ----------------------------------------------------------- */ //what's the current path? //we will verify this a bit further down if(isset($_GET['curdirpath']) && $_GET['curdirpath']!='') { $curdirpath = Security::remove_XSS($_GET['curdirpath']); } elseif (isset($_POST['curdirpath']) && $_POST['curdirpath']!='') { $curdirpath = Security::remove_XSS($_POST['curdirpath']); } else { $curdirpath = '/'; } $curdirpathurl = urlencode($curdirpath); $course_dir = $_course['path']."/document"; $sys_course_path = api_get_path(SYS_COURSE_PATH); $base_work_dir = $sys_course_path.$course_dir; $http_www = api_get_path('WEB_COURSE_PATH').$_course['path'].'/document'; $dbl_click_id = 0; // used to avoid double-click $is_allowed_to_edit = api_is_allowed_to_edit(null,true); $group_member_with_upload_rights = false; //if the group id is set, we show them group documents if(isset($_SESSION['_gid']) && $_SESSION['_gid']!='') { //needed for group related stuff require_once(api_get_path(LIBRARY_PATH) . 'groupmanager.lib.php'); //get group info $group_properties = GroupManager::get_group_properties($_SESSION['_gid']); $noPHP_SELF=true; //let's assume the user cannot upload files for the group $group_member_with_upload_rights = false; if($group_properties['doc_state']==2) //documents are private { if($is_allowed_to_edit || GroupManager :: is_user_in_group($_user['user_id'],$_SESSION['_gid'])) //only courseadmin or group members (members + tutors) allowed { $to_group_id = $_SESSION['_gid']; $req_gid = '&gidReq='.$_SESSION['_gid']; $interbreadcrumb[]= array ("url"=>"../group/group.php", "name"=> get_lang('Groups')); $interbreadcrumb[]= array ("url"=>"../group/group_space.php?gidReq=".$_SESSION['_gid'], "name"=> get_lang('GroupSpace').' ('.$group_properties['name'].')'); //they are allowed to upload $group_member_with_upload_rights = true; } else { $to_group_id = 0; $req_gid = ''; } } elseif($group_properties['doc_state']==1) //documents are public { $to_group_id = $_SESSION['_gid']; $req_gid = '&gidReq='.$_SESSION['_gid']; $interbreadcrumb[]= array ("url"=>"../group/group.php", "name"=> get_lang('Groups')); $interbreadcrumb[]= array ("url"=>"../group/group_space.php?gidReq=".$_SESSION['_gid'], "name"=> get_lang('GroupSpace').' ('.$group_properties['name'].')'); //allowed to upload? if($is_allowed_to_edit || GroupManager::is_subscribed($_user['user_id'],$_SESSION['_gid'])) //only courseadmin or group members can upload { $group_member_with_upload_rights = true; } } else //documents not active for this group { $to_group_id = 0; $req_gid = ''; } $_SESSION['group_member_with_upload_rights'] = $group_member_with_upload_rights; } else { $to_group_id = 0; $req_gid = ''; } // If i'm in a session we should check the parameters of visibility if (api_get_session_id()!=0) { $group_member_with_upload_rights = $group_member_with_upload_rights && api_is_allowed_to_session_edit(false,true); } /* ----------------------------------------------------------- Libraries ----------------------------------------------------------- */ //the main_api.lib.php, database.lib.php and display.lib.php //libraries are included by default require_once api_get_path(LIBRARY_PATH) . 'fileDisplay.lib.php'; require_once api_get_path(LIBRARY_PATH) . 'document.lib.php'; require_once api_get_path(LIBRARY_PATH) . 'tablesort.lib.php'; require_once api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php'; //----------------------------------------------------------- //check the path //if the path is not found (no document id), set the path to / if(!DocumentManager::get_document_id($_course,$curdirpath)) { $curdirpath = '/'; //urlencoded version $curdirpathurl = '%2F'; } //if they are looking at group documents they can't see the root if($to_group_id!=0 && $curdirpath=='/') { $curdirpath = $group_properties['directory']; $curdirpathurl = urlencode($group_properties['directory']); } //----------------------------------------------------------- // check visibility of the current dir path. Don't show anything if not allowed if (!(DocumentManager::is_visible($curdirpath, $_course)||$is_allowed_to_edit)){ api_not_allowed(); } /* ----------------------------------------------------------- Constants and variables ----------------------------------------------------------- */ $course_quota = DocumentManager::get_course_quota(); $current_session_id = api_get_session_id(); /* ----------------------------------------------------------- Create the current user shared folder if no exist ----------------------------------------------------------- */ if (!file_exists($base_work_dir.'/shared_folder/sf_user_'.api_get_user_id())) { $usf_dir_title=api_get_person_name($_user['firstName'], $_user['lastName']); $usf_dir_name='/shared_folder/sf_user_'.api_get_user_id(); $to_group_id=0; create_unexisting_directory($_course,$_user['user_id'],$to_group_id,$to_user_id,$base_work_dir,$usf_dir_name,$usf_dir_title); } /* ============================================================================== MAIN SECTION ============================================================================== */ //-------------------------------------------------------------------// if (isset($_GET['action']) && $_GET['action']=="download") { $my_get_id=Security::remove_XSS($_GET['id']); //check if the document is in the database if(!DocumentManager::get_document_id($_course,$my_get_id)) { //file not found! header('HTTP/1.0 404 Not Found'); $error404 = ''; $error404 .= ''; $error404 .= '404 Not Found'; $error404 .= ''; $error404 .= '

Not Found

'; $error404 .= '

The requested URL was not found on this server.

'; $error404 .= '
'; $error404 .= ''; echo($error404); exit; } // launch event event_download($my_get_id); // check visibility of document and paths if (!($is_allowed_to_edit || $group_member_with_upload_rights) && !DocumentManager::is_visible($my_get_id, $_course)){ api_not_allowed(); } $doc_url=$my_get_id; $full_file_name = $base_work_dir.$doc_url; DocumentManager::file_send_for_download($full_file_name,true); exit; } //-------------------------------------------------------------------// //download of an completed folder if(isset($_GET['action']) && $_GET['action']=="downloadfolder" && (api_get_setting('students_download_folders') == 'true' || api_is_allowed_to_edit() || api_is_platform_admin())) { require('downloadfolder.inc.php'); } //-------------------------------------------------------------------// // slideshow inititalisation $_SESSION['image_files_only']=''; $image_files_only=''; /* ----------------------------------------------------------- Header ----------------------------------------------------------- */ $interbreadcrumb[]= array ('url'=>'', 'name'=> get_lang('Document')); //------interbreadcrumb for the current directory root path $dir_array=explode("/",$curdirpath); $array_len=count($dir_array); if ($array_len >1) { if(empty($_SESSION['_gid'])) { $url_dir='document.php?&curdirpath=/'; $interbreadcrumb[]= array ('url'=>$url_dir, 'name'=> get_lang('HomeDirectory')); } } $dir_acum=''; for ($i=0; $i<$array_len;$i++) { if($dir_array[$i] =='shared_folder') { $dir_array[$i]=get_lang('SharedFolder'); } elseif(strstr($dir_array[$i], 'sf_user_')) { $userinfo=Database::get_user_info_from_id(substr($dir_array[$i], 8)); $dir_array[$i]=api_get_person_name($userinfo['firstname'], $userinfo['lastname']); } $url_dir='document.php?&curdirpath='.$dir_acum.$dir_array[$i]; $interbreadcrumb[]= array ('url'=>$url_dir, 'name'=> $dir_array[$i]); $dir_acum.=$dir_array[$i].'/'; } Display::display_header('','Doc'); /* * Lib for event log, stats & tracking * plus record of the access */ event_access_tool(TOOL_DOCUMENT); /* ============================================================================== DISPLAY ============================================================================== */ if($to_group_id !=0) //add group name after for group documents { $add_group_to_title = ' ('.$group_properties['name'].')'; } //api_display_tool_title($tool_name.$add_group_to_title); /* ----------------------------------------------------------- Introduction section (editable by course admins) ----------------------------------------------------------- */ if(!empty($_SESSION['_gid'])) { Display::display_introduction_section(TOOL_DOCUMENT.$_SESSION['_gid']); } else { Display::display_introduction_section(TOOL_DOCUMENT); } /*============================================================================*/ if($is_allowed_to_edit || $group_member_with_upload_rights) // TEACHER ONLY { /*====================================== MOVE FILE OR DIRECTORY ======================================*/ $my_get_move=Security::remove_XSS($_GET['move']); if (isset($_GET['move']) && $_GET['move']!='') { if (!$is_allowed_to_edit) { if(DocumentManager::check_readonly($_course,$_user['user_id'],$my_get_move)) { api_not_allowed(); } } if(DocumentManager::get_document_id($_course,$my_get_move)) { $folders = DocumentManager::get_all_document_folders($_course,$to_group_id,$is_allowed_to_edit || $group_member_with_upload_rights); echo '
'.get_lang('Move').'
'; echo build_move_to_selector($folders,Security::remove_XSS($_GET['curdirpath']),$my_get_move,$group_properties['directory']); } } if (isset($_POST['move_to']) && isset($_POST['move_file'])) { if (!$is_allowed_to_edit) { if(DocumentManager::check_readonly($_course,$_user['user_id'],$my_get_move)) { api_not_allowed(); } } require_once(api_get_path(LIBRARY_PATH) . 'fileManage.lib.php'); //this is needed for the update_db_info function //$dbTable = $_course['dbNameGlu']."document"; $dbTable = Database::get_course_table(TABLE_DOCUMENT); //security fix: make sure they can't move files that are not in the document table if(DocumentManager::get_document_id($_course,$_POST['move_file'])) { if ( move($base_work_dir.$_POST['move_file'],$base_work_dir.$_POST['move_to']) ) { update_db_info("update", $_POST['move_file'], $_POST['move_to']."/".basename($_POST['move_file'])); //set the current path $curdirpath = $_POST['move_to']; $curdirpathurl = urlencode($_POST['move_to']); Display::display_confirmation_message(get_lang('DirMv')); } else { Display::display_error_message(get_lang('Impossible')); } } else { Display::display_error_message(get_lang('Impossible')); } } /*====================================== DELETE FILE OR DIRECTORY ======================================*/ if ( isset($_GET['delete']) ) { if (!$is_allowed_to_edit) { if(DocumentManager::check_readonly($_course,$_user['user_id'],$_GET['delete'],'',true)) { api_not_allowed(); } } require_once(api_get_path(LIBRARY_PATH) . 'fileManage.lib.php'); if(DocumentManager::delete_document($_course,$_GET['delete'],$base_work_dir)) { Display::display_confirmation_message(get_lang('DocDeleted')); } else { Display::display_error_message(get_lang('DocDeleteError')); } } if( isset($_POST['action'])) { switch($_POST['action']) { case 'delete': foreach($_POST['path'] as $index => $path) { if (!$is_allowed_to_edit) { if(DocumentManager::check_readonly($_course,$_user['user_id'],$path)) { Display::display_error_message(get_lang('CantDeleteReadonlyFiles')); break 2; } } } foreach($_POST['path'] as $index => $path) { if (strcmp($path,'/audio')===0 or strcmp($path,'/flash')===0 or strcmp($path,'/images')===0 or strcmp($path,'/shared_folder')===0 or strcmp($path,'/video')===0) { continue; } else { $delete_document = DocumentManager::delete_document($_course,$path,$base_work_dir); } } if (!empty($delete_document)) { Display::display_confirmation_message(get_lang('DocDeleted')); } break; } } /*====================================== CREATE DIRECTORY ======================================*/ //create directory with $_POST data if(isset($_POST['create_dir']) && $_POST['dirname']!='') { //needed for directory creation require_once(api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php'); $post_dir_name=Security::remove_XSS($_POST['dirname']); if ($post_dir_name=='../' || $post_dir_name=='.' || $post_dir_name=='..') { Display::display_error_message(get_lang('CannotCreateDir')); } else { $added_slash = ($curdirpath=='/')?'':'/'; $dir_name = $curdirpath.$added_slash.replace_dangerous_char($post_dir_name); $dir_name = disable_dangerous_file($dir_name); $dir_check=$base_work_dir.''.$dir_name; if(!is_dir($dir_check)) { $created_dir = create_unexisting_directory($_course,$_user['user_id'],$to_group_id,$to_user_id,$base_work_dir,$dir_name,$post_dir_name); if($created_dir) { Display::display_confirmation_message(''.get_lang('DirCr').'',false); //uncomment if you want to enter the created dir //$curdirpath = $created_dir; //$curdirpathurl = urlencode($curdirpath); } else { Display::display_error_message(get_lang('CannotCreateDir')); } } else { Display::display_error_message(get_lang('CannotCreateDir')); } } } //show them the form for the directory name if(isset($_GET['createdir'])) { //show the form echo create_dir_form(); } /*====================================== VISIBILITY COMMANDS ======================================*/ if ((isset($_GET['set_invisible']) && !empty($_GET['set_invisible'])) || (isset($_GET['set_visible']) && !empty($_GET['set_visible'])) AND $_GET['set_visible']<>'*' AND $_GET['set_invisible']<>'*') { //make visible or invisible? if(isset($_GET['set_visible'])) { $update_id = $_GET['set_visible']; $visibility_command = 'visible'; } else { $update_id = $_GET['set_invisible']; $visibility_command = 'invisible'; } if (!$is_allowed_to_edit) { if(DocumentManager::check_readonly($_course,$_user['user_id'],'',$update_id)) { api_not_allowed(); } } //update item_property to change visibility if(api_item_property_update($_course, TOOL_DOCUMENT, $update_id, $visibility_command, $_user['user_id'],null,null,null,null,$current_session_id)) { Display::display_confirmation_message(get_lang("ViMod")); } else { Display::display_error_message(get_lang("ViModProb")); } } /*====================================== TEMPLATE ACTION ======================================*/ if (isset($_GET['add_as_template']) && !isset($_POST['create_template'])) { $document_id_for_template = intval($_GET['add_as_template']); //create the form that asks for the directory name $template_text = '
'; $template_text .= ''; $template_text .= ''; $template_text .= ''; //$template_text .= ''; //$template_text .= ''; $template_text .= ''; $template_text .= ''; $template_text .= '
'; $template_text .= get_lang('TemplateName').' :
'.get_lang('TemplateDescription').' :
'.get_lang('TemplateImage').' :
'; $template_text .= ''; $template_text .= '
'; //show the form Display::display_normal_message($template_text,false); } elseif(isset($_GET['add_as_template']) && isset($_POST['create_template'])) { $document_id_for_template = intval(Database::escape_string($_GET['add_as_template'])); $title=Security::remove_XSS($_POST['template_title']); //$description = Security::remove_XSS($_POST['template_description']); $course_code = api_get_course_id(); $user_id = api_get_user_id(); // create the template_thumbnails folder in the upload folder (if needed) if (!is_dir(api_get_path(SYS_CODE_PATH).'upload/template_thumbnails/')) { $perm = api_get_setting('permissions_for_new_directories'); $perm = octdec(!empty($perm)?$perm:'0770'); $res = @mkdir(api_get_path(SYS_CODE_PATH).'upload/template_thumbnails/',$perm); } // upload the file if (!empty($_FILES['template_image']['name'])) { require_once api_get_path(LIBRARY_PATH).'fileUpload.lib.php'; $upload_ok = process_uploaded_file($_FILES['template_image']); if ($upload_ok) { // Try to add an extension to the file if it hasn't one $new_file_name = $_course['sysCode'].'-'.add_ext_on_mime(stripslashes($_FILES['template_image']['name']), $_FILES['template_image']['type']); // upload dir $upload_dir = api_get_path(SYS_CODE_PATH).'upload/template_thumbnails/'; // resize image to max default and end upload require_once (api_get_path(LIBRARY_PATH).'image.lib.php'); $temp = new image($_FILES['template_image']['tmp_name']); $picture_infos = @getimagesize($_FILES['template_image']['tmp_name']); $max_width_for_picture = 100; if ($picture_infos[0]>$max_width_for_picture) { $thumbwidth = $max_width_for_picture; if (empty($thumbwidth) or $thumbwidth==0) { $thumbwidth=$max_width_for_picture; } $new_height = round(($thumbwidth/$picture_infos[0])*$picture_infos[1]); $temp->resize($thumbwidth,$new_height,0); } $type=$picture_infos[2]; switch (!empty($type)) { case 2 : $temp->send_image('JPG',$upload_dir.$new_file_name); break; case 3 : $temp->send_image('PNG',$upload_dir.$new_file_name); break; case 1 : $temp->send_image('GIF',$upload_dir.$new_file_name); break; } } } DocumentManager::set_document_as_template($title, $description, $document_id_for_template, $course_code, $user_id, $new_file_name); Display::display_confirmation_message(get_lang('DocumentSetAsTemplate')); } if(isset($_GET['remove_as_template'])) { $document_id_for_template = intval($_GET['remove_as_template']); $course_code = api_get_course_id(); $user_id = api_get_user_id(); DocumentManager::unset_document_as_template($document_id_for_template, $course_code, $user_id); Display::display_confirmation_message(get_lang('DocumentUnsetAsTemplate')); } } // END is allowed to edit /* ----------------------------------------------------------- GET ALL DOCUMENT DATA FOR CURDIRPATH ----------------------------------------------------------- */ $docs_and_folders = DocumentManager::get_all_document_data($_course,$curdirpath,$to_group_id,NULL,$is_allowed_to_edit || $group_member_with_upload_rights); ?> '; /* GO TO PARENT DIRECTORY */ if ($curdirpath!= '/'&& $curdirpath!=$group_properties['directory']) { ?>   '); //print_r($docs_and_folders); //echo(''); //************************************************************************************************* //do we need the title field for the document name or not? //we get the setting here, so we only have to do it once $use_document_title = api_get_setting('use_document_title'); //create a sortable table with our data $sortable_data = array(); while (list ($key, $id) = each($docs_and_folders)) { $row = array (); //if the item is invisible, wrap it in a span with class invisible $invisibility_span_open = ($id['visibility']==0)?'':''; //size (or total size of a directory) $size = $id['filetype']=='folder' ? get_total_folder_size($id['path'],$is_allowed_to_edit) : $id['size']; //get the title or the basename depending on what we're using if ($use_document_title=='true' AND $id['title']<>'') { $document_name=$id['title']; } else { $document_name=basename($id['path']); //Juan Carlos RaƱa: Get firstname and lastname when folder is in shared_folder. //TODO: check if is also necessary (above else) if(strstr($document_name, 'sf_user_')) { $userinfo=Database::get_user_info_from_id(substr($document_name, 8)); $document_name=api_get_person_name($userinfo['firstname'], $userinfo['lastname']); } elseif(strstr($document_name, 'shared_folder')) { $document_name=get_lang('SharedFolder'); } } //data for checkbox if (($is_allowed_to_edit || $group_member_with_upload_rights) AND count($docs_and_folders)>1) { $row[] = $id['path']; } // Show the Owner of the file only in groups $user_link=''; if(isset($_SESSION['_gid']) && $_SESSION['_gid']!='') { if (!empty($id['insert_user_id'])) { $user_info=UserManager::get_user_info_by_id($id['insert_user_id']); $user_name=api_get_person_name($user_info['firstname'], $user_info['lastname']); $user_link='
'.get_lang('Owner').': '.display_user_link_document($id['insert_user_id'],$user_name).'
'; } } //icons (clickable) //$row[]= build_document_icon_tag($id['filetype'],$id['path']); $row[] = create_document_link($http_www, $document_name, $id['path'], $id['filetype'], $size, $id['visibility'], true); //validacion when belongs to a session $session_img = api_get_session_image($id['session_id'], $_user['status']); //document title with hyperlink $row[] = create_document_link($http_www, $document_name, $id['path'], $id['filetype'], $size, $id['visibility']).$session_img.'
'.$invisibility_span_open.nl2br(htmlspecialchars($id['comment'],ENT_QUOTES,$charset)).$invisibility_span_close.$user_link; //comments => display comment under the document name //$row[] = $invisibility_span_open.nl2br(htmlspecialchars($id['comment'])).$invisibility_span_close; $display_size = format_file_size($size); $row[] = ''.$size.''.$invisibility_span_open.$display_size.$invisibility_span_close; //last edit date $last_edit_date=$id['lastedit_date']; $display_date = date_to_str_ago($last_edit_date).'
'.$last_edit_date.''; $row[] = $invisibility_span_open.$display_date.$invisibility_span_close; //admins get an edit column if ($is_allowed_to_edit || $group_member_with_upload_rights) { $is_template = (isset($id['is_template'])?$id['is_template']:false); // if readonly, check if it the owner of the file or if the user is an admin if ($id['insert_user_id'] == $_user['user_id'] || api_is_platform_admin()) { $edit_icons = build_edit_icons($curdirpath,$id['filetype'],$id['path'],$id['visibility'],$key, $is_template,0); } else { $edit_icons = build_edit_icons($curdirpath,$id['filetype'],$id['path'],$id['visibility'],$key, $is_template,$id['readonly']); } $row[] = $edit_icons; } $row[] = $last_edit_date; $row[] = $size; $total_size=$total_size+$size; $sortable_data[] = $row; } //******************************************************************************************* } else { $sortable_data=''; $table_footer='
'.get_lang('NoDocsInFolder').'
'; } $column_show=array(); if ($is_allowed_to_edit || $group_member_with_upload_rights || is_my_shared_folder($_user['user_id'],$curdirpath))// TODO:check enable more options for shared folders { /* CREATE NEW DOCUMENT OR NEW DIRECTORY / GO TO UPLOAD / DOWNLOAD ZIPPED FOLDER */ ?>        (ZIP)" alt="" /> (ZIP)   ". get_lang('ViewSlideshow') . ""; } echo ""; echo(build_directory_selector($folders,$curdirpath,(isset($group_properties['directory'])?$group_properties['directory']:array()),true)); //============================================================================== if (($is_allowed_to_edit || $group_member_with_upload_rights) AND count($docs_and_folders)>1) { $column_show[]=1; } $column_show[]=1; $column_show[]=1; $column_show[]=1; $column_show[]=1; if ($is_allowed_to_edit || $group_member_with_upload_rights) { $column_show[]=1; } $column_show[]=0; $column_order=array(); if ( count($row) == 8 ) { $column_order[]=1; $column_order[]=2; $column_order[]=7; $column_order[]=6; $column_order[]=5; } else if ( count($row) == 6 ) { $column_order[]=1; $column_order[]=2; $column_order[]=7; $column_order[]=4; } $default_column = $is_allowed_to_edit ? 2 : 1; $tablename = $is_allowed_to_edit ? 'teacher_table' : 'student_table'; $table = new SortableTableFromArrayConfig($sortable_data,$default_column,20,$tablename,$column_show,$column_order,'ASC'); $query_vars['curdirpath'] = $curdirpath; if(isset($_SESSION['_gid'])) { $query_vars['gidReq'] = $_SESSION['_gid']; } $query_vars['cidReq'] = api_get_course_id(); $table->set_additional_parameters($query_vars); $column = 0; if (($is_allowed_to_edit || $group_member_with_upload_rights) AND count($docs_and_folders)>1) { $table->set_header($column++,'',false); } $table->set_header($column++,get_lang('Type')); $table->set_header($column++,get_lang('Name')); //$column_header[] = array(get_lang('Comment'),true); => display comment under the document name $table->set_header($column++,get_lang('Size')); $table->set_header($column++,get_lang('Date')); //admins get an edit column if ($is_allowed_to_edit || $group_member_with_upload_rights) { $table->set_header($column++,get_lang('Modify'),false); } //actions on multiple selected documents //currently only delete action -> take only DELETE right into account if (count($docs_and_folders)>1) { if ($is_allowed_to_edit || $group_member_with_upload_rights) { $form_actions = array(); $form_action['delete'] = get_lang('Delete'); $table->set_form_actions($form_action,'path'); } } $table->display(); if(!empty($table_footer)) { echo $table_footer; } // footer Display::display_footer(); ?>