function Validate(theform)
	 {
	  //Validate the Cover Time
	 }



	  function calculate(){
	
	var checkDIS = "0123456789";

	var checkStr = document.carfinance.amount.value;

	var allValid = true;

	var openBrace = false;

	var closeBrace = false;

	if (checkStr == "")
		allValid = false;
if (checkStr == "amount (£)")
		allValid = false;
		
	for (i = 0; i < checkStr.length; i++)
		{
			ch = checkStr.charAt(i);

			if (ch == "(")
				openBrace = true;

			if ((ch == ")") && !openBrace)
			{
				allValid = false;
				break;
			}

			if (ch == ")")
			{
				closeBrace = true;
				openBrace = false;
			}

			if ((ch == "+") && (i != 0))
			{
				allValid = false;
				break;
			}

			for (j = 0; j < checkDIS.length; j++)

			if (ch == checkDIS.charAt(j))
					break;
			if (j == checkDIS.length)
			{
				allValid = false;
				break;
			}
		}

			if (openBrace)
				allValid = false;

			if (!allValid)
			{
				alert("Please enter the car finance amount correctly.");
				document.carfinance.amount.focus();
				return (false);
			}
	 

	var amount = parseFloat(document.carfinance.amount.value);
	var rate = parseFloat(document.carfinance.interest.value)/1200;
	var months = parseFloat(document.carfinance.repayment.value);
	var monthly_payments

	monthly_payments = (rate + (rate / (Math.pow((1+ rate), (months)) - 1))) * amount;
	monthly_payments = monthly_payments * 100;
	monthly_payments = Math.round(monthly_payments);
	monthly_payments = monthly_payments / 100;

	document.getElementById('total').innerHTML = "<b>Monthly Payments:</b> £" + monthly_payments;
	document.getElementById('more').innerHTML = "Over a period of <b>" + months + "</b> months.";

var total = monthly_payments * months ;
	
	document.getElementById('total').innerHTML = "<b>Total Repayment:</b> £" + total.toFixed(2) + " (£" + amount.toFixed(2) + " over " + months + " months)";
	document.getElementById('more').innerHTML = "Over a period of <b>" + months + "</b> months, this equates to <b>£" + monthly_payments + "</b> a month.";


return false;
}

	  function clearThis(thisField)
{

var entered;
entered = carfinance.amount.value;
entered = entered.replace("£", "");
entered = entered.replace(" ", "");
entered = entered.replace(",", "");
entered = entered.replace("$", "");
thisField.value = entered;

}

function clearHelpText(thisField)
{
  if (thisField.value == thisField.defaultValue)
	{
	thisField.value = ''; 
	thisField.focus();
	}
}