function validate()
{
	var payment=document.airport_transfer_quote.paymentType;
	var car=document.airport_transfer_quote.rdiCarType;
	var payFlag=false;
	var flag=false;
	var c=false;
	
	for(i=0;i<payment.length;++i)
	{
		if(payment[i].checked==false)
		{
			payFlag=false;
		}
		else
		{
			payFlag=true;
			break
		}
	}
	for(i=0;i<car.length;++i)
	{
		if(car[i].checked!=true)
		{
			flag=false;
		}
		else
		{
			c=true;
			break
		}
	}
	if(c==false)
	{
		alert('Please select car type');
	}
	else if(payFlag==false)
	{
		alert('Please select payment type');
	}
	else if(payFlag==true && c==true)
	{
		flag=true;
	}
	if(flag==true)
	{	
		document.airport_transfer_quote.submit();
	}
	return flag;
}