var bAdded = false;

function updateSum(price) {
	
	var oRadio = document.getElementById('radio-pay-form-30');
	var oPriceElement = document.getElementById('all-price');
	
	if(oRadio.checked)
	{
		if(!bAdded) {
			var nPrice = parseFloat(oPriceElement.innerHTML);
			nPrice += price;
			oPriceElement.innerHTML = nPrice + 'zł';	
			bAdded = true;		
		}
	} 
}

function updateSum2(price) {
	if(bAdded) {
		var oPriceElement = document.getElementById('all-price');
		var nPrice = parseFloat(oPriceElement.innerHTML);
		nPrice -= price;
		oPriceElement.innerHTML = nPrice + 'zł';	
		bAdded = false;
	}
}