function ValidatorNull(TheObject,ErrorText)
{
  if (TheObject.value == "")
  {
    alert(ErrorText);
    TheObject.focus();
    return (false);
  }
  return (true);
}


function ValidatorNumber(TheObject,ErrorText)
{

  var checkOK = "0123456789";
  var checkStr = TheObject.value;
  var allValid = true;
  var decPoints = 0;
  var allNum = "";
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
    allNum += ch;
  }
  if (!allValid)
  {
    alert(ErrorText);
    TheObject.focus();
    return (false);
  }
  return (true);
}



function ValidatorMail(TheObject,ErrorText)
{
  var checkStr = TheObject.value;
  var malpaValid = false;
  var kropkaValid = false;

  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
      if (ch == "@")
        malpaValid = true;

      if (ch == ".")
        kropkaValid = true;
  }
  if ((!malpaValid) || (!kropkaValid))
  {
    alert(ErrorText);
    TheObject.focus();
    return (false);
  }
  return (true);
}