function calcer (type, kurs, tax) {
  var gp = 0;
  var usd = 0;
  if (type == 1) { // calc USDs
    gp = Math.ceil (document.forms['pay1'].gp.value);
    usd = gp * kurs;
//    var pay = usd + usd * tax;
  }
  document.forms['pay1'].gp.value = gp;
  document.forms['pay1'].usd.value = usd;
//  pay = Math.ceil (pay * 100);
//  document.forms['pay1'].pay.value = pay / 100 + " руб";
}

function accalcer (crs) {
  var gp = 0;
  gp = Math.ceil (document.PAY1.gp.value);
//  document.PAY1.gp.value = gp;
  document.PAY1.cost.value = crs[gp];
}