function SendFind1(frm,alr3,alr4,alr1,alr2) {

  if(frm.a20.value.length > 0 && !isNum(frm.a20.value)) {
  alert(alr1);
  frm.a20.focus();
  return false;
  }
  
  else if(frm.a19.value.length > 0 && !isNum(frm.a19.value)) {
  alert(alr2);
  frm.a19.focus();
  return false;
  }
  
  else if(frm.a22.value.length > 0 && !isNum(frm.a22.value)){
  alert(alr3);
  frm.a22.focus();
  return false;
  }
  
  else if(frm.a21.value.length > 0 && !isNum(frm.a21.value)){
  alert(alr4);
  frm.a21.focus();
  return false;
  } 
  
  else{
  return true;
  }
}

function SendFind2(frm,alr3,alr4,alr1,alr2,alr5,alr6,alr7,alr8,alr9,alr10,alr11,alr12) {

  if(frm.a20.value.length > 0 && !isNum(frm.a20.value)) {
  alert(alr1);
  frm.a20.focus();
  return false;
  }
  
  else if(frm.a19.value.length > 0 && !isNum(frm.a19.value)) {
  alert(alr2);
  frm.a19.focus();
  return false;
  }
  
  else if(frm.a22.value.length > 0 && !isNum(frm.a22.value)){
  alert(alr3);
  frm.a22.focus();
  return false;
  }
  
  else if(frm.a21.value.length > 0 && !isNum(frm.a21.value)){
  alert(alr4);
  frm.a21.focus();
  return false;
  }

  else if(frm.a33.value.length > 0 && !isNum(frm.a33.value)){
  alert(alr5);
  frm.a33.focus();
  return false;
  }

  else if(frm.a34.value.length > 0 && !isNum(frm.a34.value)){
  alert(alr6);
  frm.a34.focus();
  return false;
  } 

  else if(frm.a18.value.length > 0 && !isNum(frm.a18.value)){
  alert(alr7);
  frm.a18.focus();
  return false;
  }

  else if(frm.a17.value.length > 0 && !isNum(frm.a17.value)){
  alert(alr8);
  frm.a17.focus();
  return false;
  } 

  else if(frm.a16.value.length > 0 && !isNum(frm.a16.value)){
  alert(alr9);
  frm.a16.focus();
  return false;
  }

  else if(frm.a15.value.length > 0 && !isNum(frm.a15.value)){
  alert(alr10);
  frm.a15.focus();
  return false;
  } 

  else if(frm.a14.value.length > 0 && !isNum(frm.a14.value)){
  alert(alr11);
  frm.a14.focus();
  return false;
  }

  else if(frm.a13.value.length > 0 && !isNum(frm.a13.value)){
  alert(alr12);
  frm.a13.focus();
  return false;
  } 

  else{
  return true;
  }
}

function isNum(cislo) {
  if(!isNaN(parseInt(cislo))) {
    if(parseInt(cislo) == cislo) { return true; }
    else { return false; }
  } else {
  return false;
  }
}