function updateListQuantity(str,num)
{
	if(str != "manual")
	{
		if(str == "increase")
		{
			$('#detailquantity'+num).val(parseInt($('#detailquantity'+num).val()) + 1);
		}
		else
		{
			if(	parseInt($('#detailquantity'+num).val()) > 1)
			{
				$('#detailquantity'+num).val(parseInt($('#detailquantity'+num).val()) - 1);
			}
		}
	}
	else
	{
		if(isNaN($('#detailquantity'+num).val()) || $('#detailquantity'+num).val() == "" || $('#detailquantity'+num).val() == 0)
		{
			$('#detailquantity'+num).val(1);	
		}
	}
}

function updateQuantity(str,price,vat)
{
	if(str != "manual")
	{
		if(str == "increase")
		{
			$('#detailquantity').val(parseInt($('#detailquantity').val()) + 1);
		}
		else
		{
			if(	parseInt($('#detailquantity').val()) > 1)
			{
				$('#detailquantity').val(parseInt($('#detailquantity').val()) - 1);
			}
		}
	}
	else
	{
		if(isNaN($('#detailquantity').val()) || $('#detailquantity').val() == "" || $('#detailquantity').val() == 0)
		{
			$('#detailquantity').val(1);	
		}
	}
	
	var new_price = price*parseInt($('#detailquantity').val());
	var vat = vat*new_price;
	var total_price = vat+new_price;
	
	total_price = Math.round(total_price*100)/100
	
	total_price_txt = total_price.toString();
	if(total_price_txt.indexOf('.') == -1)
	{
		total_price += ".00";	
	}
	else
	{
		ending = total_price_txt.substring(total_price_txt.indexOf('.'));
		if(ending.length == 2)
		{
			total_price += "0";	
		}
	}
	
	var price_string = "<strong>Price: £" + total_price + " including VAT</strong>";
	$('#total-price-output').html(price_string);
}