function form_validation(theForm)
{

  if (theForm.quantity1.value == "")
  {
    alert("Please enter a value for the \"Please enter a number of 0 or greater\" field.");
    theForm.quantity1.focus();
    return (false);
  }

  var checkOK = "0123456789-,";
  var checkStr = theForm.quantity1.value;
  var allValid = true;
  var validGroups = 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;
    }
    if (ch != ",")
      allNum += ch;
  }
  if (!allValid)
  {
    alert("Please enter only digit characters in the \"Please enter a number of 0 or greater\" field.");
    theForm.quantity1.focus();
    return (false);
  }

  if (theForm.quantity3.value == "")
  {
    alert("Please enter a value for the \"Please enter a number of 0 or greater\" field.");
    theForm.quantity3.focus();
    return (false);
  }

  var checkOK = "0123456789-,";
  var checkStr = theForm.quantity3.value;
  var allValid = true;
  var validGroups = 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;
    }
    if (ch != ",")
      allNum += ch;
  }
  if (!allValid)
  {
    alert("Please enter only digit characters in the \"Please enter a number of 0 or greater\" field.");
    theForm.quantity3.focus();
    return (false);
  }

  if (theForm.quantity4.value == "")
  {
    alert("Please enter a value for the \"Please enter a number of 0 or greater\" field.");
    theForm.quantity4.focus();
    return (false);
  }

    var checkOK = "0123456789-,";
  var checkStr = theForm.quantity4.value;
  var allValid = true;
  var validGroups = 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;
    }
    if (ch != ",")
      allNum += ch;
  }
  if (!allValid)
  {
    alert("Please enter only digit characters in the \"Please enter a number of 0 or greater\" field.");
    theForm.quantity4.focus();
    return (false);
  }

  return (true);
}



function calc_shipping() {
varQty = document.paypal.quantity1.value;
varQty3 = document.paypal.quantity3.value;
varQty4 = document.paypal.quantity4.value;
if (varQty == "") {
varQty = 0
document.paypal.quantity1.value = 0;
}
if (varQty3 == "") {
varQty3 = 0
document.paypal.quantity3.value = 0;
}
if (varQty4 == "") {
varQty4 = 0
document.paypal.quantity4.value = 0;
}

varQtyTotal = parseInt(varQty) + parseInt(varQty3) + parseInt(varQty4)

varTotal = varQtyTotal * document.paypal.itm_val.value;
//document.paypal.amount.value = varTotal;
if (varQtyTotal >= 1 && varQtyTotal <= 9) {
  varShipping = 3.00;
  varNewAmount = 10;
}
if (varQtyTotal >= 10 && varQtyTotal <= 24) {
  varShipping = 4.00;
  varNewAmount = 10;
}
if (varQtyTotal >= 25 && varQtyTotal <= 49) {
  varShipping = 6.00;
  varNewAmount = 9;
}
if (varQtyTotal >= 50 && varQtyTotal <= 99) {
  varShipping = 7.00;
  varNewAmount = 8;
}
if (varQtyTotal >= 100) {
  varShipping = 0;
  varNewAmount = 7;
}


document.paypal.amount.value = varNewAmount;
document.paypal.shipping.value=varShipping;
document.paypal.quantity.value=varQtyTotal;
document.paypal.item_name.value='Hope:' + varQty + '-Christmas:' + varQty3 + '-Weary:' + varQty4;

}