public function thisPage(){
        $this->smarty->assign('kats', 0);
        if(isset($_GET['kat'])){
            $this->smarty->assign('kats', $this->mysqli->escape_string($_GET['kat']));
            $kat = $this->mysqli->escape_string($_GET['kat']);
            $rechte = $kat;

            $thisKat = $this->mysqli->query("SELECT * FROM kategorien WHERE id = '".$kat."'");

            if($thisKat->num_rows == 1){
                $thisKat = $thisKat->fetch_object();

                $this->smarty->assign('kat_name', utf8_encode($thisKat->name));

                $cars = $this->mysqli->query("SELECT * FROM items WHERE kat_id = '".$thisKat->id."' ORDER by name");
                while($Car = $cars->fetch_object()){

                    $thisWert = $this->mysqli->query("SELECT * FROM werte WHERE car_id = '".$Car->id."' ORDER by time DESC LIMIT 1")->fetch_object();
                    $lastWert = $this->mysqli->query("SELECT * FROM werte WHERE car_id = '".$Car->id."' ORDER by time DESC LIMIT 1,1");

                    if($lastWert->num_rows == 1){
                        $lastWert = $lastWert->fetch_object();

                        if($thisWert->Preis_1 > $lastWert->Preis_1){
                            $color = "green";
                            $unterschied = $thisWert->Preis_1 - $lastWert->Preis_1;
                            $prozent = round(($unterschied * 100) / $thisWert->Preis_1, 2);
                            $change = '+ '.number_format($unterschied, 0, '.', '.'). '$ ('.$prozent.'%)';
                        } elseif($thisWert->Preis_1 < $lastWert->Preis_1){
                            $color = "red";
                            $unterschied =  $lastWert->Preis_1 - $thisWert->Preis_1;
                            $prozent = round(($unterschied * 100) / $thisWert->Preis_1, 2);
                            $change = '- '.number_format($unterschied, 0, '.', '.'). '$ ('.$prozent.'%)';
                        } else {
                            $color = "grey";
                            $change = "Keine Veränderung";
                        }

                    } else {
                        $color = "grey";

                        if($thisWert->time < time() - 86400){
                            $change = "Keine Veränderungen";
                        } else {
                            $change = "Neu eingefügt";
                        }

                    }

                    if($this->rechte < $rechte){
                        $change = "Keine Rechte";
                        $color = "grey";
                    }

                    $newCars[] = array(
                        "id" => $Car->id,
                        "name" => $Car->name,
                        "car_id" => $Car->car_id,
                        "color" => $color,
                        "change" => $change
                    );
                }

                $this->smarty->assign('newCars', $newCars);
                } else {
                    header("Location: index.php?page=car");
                    exit;
                }
        } else {
            // Neusten Änderungen
            $this->smarty->assign('kats', 0);

            $newestChanges = $this->mysqli->query("SELECT distinct car_id, MAX(time) FROM werte GROUP BY car_id ORDER by MAX(time) DESC LIMIT 20");
            while($thisChanges = $newestChanges->fetch_object()){
                $thisChange = $this->mysqli->query("SELECT * FROM werte WHERE car_id = '".$thisChanges->car_id."' ORDER by time DESC LIMIT 1")->fetch_object();

                $lastWert = $this->mysqli->query("SELECT * FROM werte WHERE car_id = '".$thisChange->car_id."' ORDER by time DESC LIMIT 1,1");
                if($lastWert->num_rows == 1){

                    $lastWert = $lastWert->fetch_object();

                    if($thisChange->Preis_1 > $lastWert->Preis_1){

                        $color = "green";
                        $unterschied = $thisChange->Preis_1 - $lastWert->Preis_1;
                        $prozent = round(($unterschied * 100) / $thisChange->Preis_1, 2);
                        $change = '+ '.number_format($unterschied, 0, '.', '.'). ' $ ('.$prozent.' %)';
                    } elseif($thisChange->Preis_1 < $lastWert->Preis_1){
                        $color = "red";
                        $unterschied =  $lastWert->Preis_1 - $thisChange->Preis_1;
                        $prozent = round(($unterschied * 100) / $thisChange->Preis_1, 2);
                        $change = '- '.number_format($unterschied, 0, '.', '.'). ' $ ('.$prozent.' %)';
                    } else {
                        $color = "grey";
                        $change = "Keine Veränderung";
                    }

                } else {
                    $color = "grey";
                    if($thisChange->time < time() - 86400){
                        $change = "Keine Veränderungen";
                    } else {
                        $change = "Neu eingefügt";
                    }
                }

                $car_name = $this->mysqli->query("SELECT * FROM items WHERE id = '".$thisChange->car_id."'");
                if($car_name->num_rows == 1){
                    $name = $car_name->fetch_object();
                    $id = $name->id;
                    $car_id = $name->car_id;
                    $rechte = $name->kat_id;
                    $name = $name->name;
                } else {
                    $name = "Unbekannt";
                    $car_id = 0;
                    $id = 0;
                    $rechte = 0;
                }

                if($this->rechte < $rechte){
                    $change = "Keine Rechte";
                    $color = "grey";
                }

                $newCars[] = array(
                    "id" => $id,
                    "name" => $name,
                    "car_id" => $car_id,
                    "color" => $color,
                    "change" => $change
                );

            }

            $this->smarty->assign('newCars', $newCars);
        }
    }