private function calculate(event:Event):void
{
var result:Number = Number(priceTxt.text) * (Number(ivaTxt.text) / 100);
totalTxt.text = totalF.format(result.toString());
}
precision="2"
decimalSeparatorFrom=","
decimalSeparatorTo=","
thousandsSeparatorFrom="."
thousandsSeparatorTo="."
useThousandsSeparator="true" />