/*********************
* VERIFICA A DATA ****
**********************/
    if (eregi("^[0-9]{2}/[0-9]{2}/[0-9]{4}$", $data)) {
        $data = explode('/', $data);
            if(checkdate($data[1],$data[0],$data[2])==1){
                        $data = $data[2].'-'.$data[1].'-'.$data[0];
                }else{
                    echo "<meta http-equiv='refresh' content='1; URL=../index.php' >
                          <script type=\"text/javascript\">alert(\"Data Invalida\");</script>";
                    exit;
                }
        }else{
                echo "<meta http-equiv='refresh' content='1; URL=../index.php' >
                          <script type=\"text/javascript\">alert(\"Data no formato invalido\");</script>";
                exit;
        }