// dem 12/27/05


function calcRound(num) 
{
   result=Math.floor(num)+"." ;
   n = result.length;
   var cents=100*(num-Math.floor(num))+0.5;
   result += Math.floor(cents/10);
   result += Math.floor(cents%10);
   return(result)
}


function Cal() 
{
	var Year;
	var Interest;
	var Carprice;
	var Downpayment;

	Interest = document.LoanCal.Interest.value;
    Carprice = document.LoanCal.Carprice.value;
    Downpayment = document.LoanCal.Downpayment.value;

	myindex = document.LoanCal.periods.selectedIndex;    
	Month = document.LoanCal.periods.options[myindex].value

	document.LoanCal.Install.value = calcRound((((Carprice-Downpayment) * (1 + (Interest/100*(Month/12)))) / Month)) ;
	return false;
}