function next(){
    mes = "";
    question = $("num").value;

    if ($("ans_" + question + "_0").checked == false && $("ans_" + question + "_1").checked == false && $("ans_" + question + "_2").checked == false && $("ans_" + question + "_3").checked == false){
      alert("Выберите ответ");
    }else{

      $("num").value = Number(question) + 1;

      if($("num").value == 36){
      	$("app").submit();
      }else{
        nextt = Number(question) + 1;
        $("question_" + question).hide();
        $("question_" + nextt).show();
        $("div_" + question).className = "ch";
        $("div_" + nextt).className = "now";
      }

    }
}
function next2(){
    mes = "";
    question = $("num").value;

    if ($("ans_" + question + "_0").checked == false && $("ans_" + question + "_1").checked == false && $("ans_" + question + "_2").checked == false && $("ans_" + question + "_3").checked == false){
      alert("Выберите ответ");
    }else{

      $("num").value = Number(question) + 1;

      if($("num").value == 31){
      	$("app").submit();
      }else{
        nextt = Number(question) + 1;
        $("question_" + question).hide();
        $("question_" + nextt).show();
        $("div_" + question).className = "ch";
        $("div_" + nextt).className = "now";
      }

    }
}