function abc(id) {
  var ob=document.getElementById('sub_'+id);
  if (ob.style.display=='none') {
    ob.style.display='block';
    cook=getCookie('su');
    cook+=id+'_';
    setCookie('su',cook);
  }
  else {
    ob.style.display='none';
    cookie = document.cookie;
    sea = '_'+id;
    offset = cookie.indexOf(sea);
      end = offset + sea.length;
      cook = cookie.substring(3,offset);
      cook = cook + cookie.substring(end,cookie.length);
      setCookie('su',cook);
  }
}
function abc1(id) {
  var ob=document.getElementById('sub_'+id);
  if (ob.style.display=='none') {
    ob.style.display='block';
  }
  else {
    ob.style.display='none';
  }
}


function setCookie (name, value, expires, path, domain, secure) {
  document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}
function getCookie(name) {
  var cookie = " " + document.cookie;
  var search = " " + name + "=";
  var setStr = null;
  var offset = 0;
  var end = 0;
  if (cookie.length > 0) {
    offset = cookie.indexOf(search);
    if (offset != -1) {
      offset += search.length;
      end = cookie.indexOf(";", offset)
      if (end == -1) {
        end = cookie.length;
      }
      setStr = unescape(cookie.substring(offset, end));
    }
  }
  return(setStr);
}

function check(f) {
  if (f.marka.value == "") {alert("Укажите марку!"); return false;}
  if (f.fio.value == "") {alert("Представьтесь пожалуйста!"); return false;} 
  if (f.phone.value == "") {alert("Укажите контактный телефон!"); return false;} 
  if (f.mesto.value == "") {alert("Укажите местонахождение автомобиля!"); return false;} 
  return true; 
}