<?php
    switch ($_GET['id']) {
        case 'S':
            $_SESSION['filterType'] = "S";
            break;
        case 'T':
            $_SESSION['filterType'] = "T";
            break;
        case 'G':
            $_SESSION['filterType'] = "G";
            break;
        case 'a':
            unset($_SESSION['filterType']);
            break;

        default:
            unset($_SESSION['filterType']);
    }

    if ($_GET['home']) {
        header("Location: $basehttp");exit();
    } else {
        header("Location: $_SERVER[HTTP_REFERER]");exit();
    }
?>