function calculate()
{
	var amount=document.getElementById('amount').value ? document.getElementById('amount').value: "0";
	var interest=document.getElementById('interest').value ? document.getElementById('interest').value: "0";
	var months=document.getElementById('months').value ? document.getElementById('months').value: "0";
	var result='';
	document.getElementById('result').value='';
	var calculatedamt=parseFloat(amount)*parseFloat(interest)/100/12*parseFloat(months);
	document.getElementById('result').value=parseFloat(calculatedamt)+parseFloat(amount);
	return false;
}