function changeTotalGolfers(){
	var total = document.getElementById('totalGolfers');
	var golfers = document.getElementById('golfers');
	total.firstChild.nodeValue = "$" + (golfers.value * 300);
}

function changeTotalEvening(){
	var total = document.getElementById('totalEvening');
	var evening = document.getElementById('guests');
	total.firstChild.nodeValue = "$" + (evening.value * 100);
}

function golfValidate(thisForm){
	with(thisForm){
		if (os0.value == "" || os0.value == null){
			alert("Please enter a contact name");
			return false;
		}
		if (os2.value == "" || os2.value == null){
			alert("Please enter an address");
			return false;
		}
		if (os3.value == "" || os3.value == null){
			alert("Please enter a city");
			return false;
		}
		if (os5.value == "" || os5.value == null){
			alert("Please enter a zip code");
			return false;
		}
		if (os6.value == "" || os6.value == null){
			alert("Please enter a phone number");
			return false;
		}
		if (os7.value == "" || os7.value == null){
			alert("Please enter an email address");
			return false;
		}
		var donation = document.getElementById("chkDonation");
		if (donation.checked == true){
			if(os8.value == "" || os8.value == null){
				alert("Please enter an amount to donate");
				return false;
			}
			if(isNaN(os8.value)){
				alert("Please enter a number amount to donate");
				return false;
			}
			amount.value = os8.value;
		}
		else{
			if ((os8.value == "" || os8.value == null)  && (os9.value == "" || os9.value == null)){
				alert("Please select number of people attending an event");
				return false;
			}
			else{
				amount.value = Number(document.getElementById("totalGolfers").innerHTML.substring(1)) + Number(document.getElementById("totalEvening").innerHTML.substring(1));
			}
		}
		

	}
}

function golfDonation(){
	var donation = document.getElementById("chkDonation");
	if (donation.checked == true){
		golfTable = document.getElementById("golfTable");
		golfTable.deleteRow(1);
		eveningTable = document.getElementById("eveningTable");
		eveningTable.deleteRow(1);
		document.getElementById("fsEvening").style.display = "none";
		document.getElementById("fsGolfer").style.display = "none";
		spanDollar = document.createElement("span");
		spanDollar.id = "spanDonation";
		spanDollar.innerHTML = " for $ ";
		hiddenAmount = document.createElement("input");
		hiddenAmount.type = "hidden";
		hiddenAmount.name = "on8";
		hiddenAmount.value = "Donation Amount";
		hiddenAmount.id = "hidAmt";
		document.getElementById("divAmount").appendChild(hiddenAmount);
		txtAmount = document.createElement("input");
		txtAmount.id = "textDonation";
		txtAmount.type = "textbox";
		txtAmount.name = "os8";
		document.getElementById("divAmount").appendChild(spanDollar);
		document.getElementById("divAmount").appendChild(txtAmount);
	}
	else{
		document.getElementById("fsEvening").style.display = "block";
		document.getElementById("fsGolfer").style.display = "block";
		document.forms["golfForm"].elements["os8"].name = "os10";
		var eveningDD = document.createElement("select");
		eveningDD.options[0] = new Option("", "");
		for(i=1;i<5;i++){
			eveningDD.options[i] = new Option(i, i);
		}
		var golferDD = document.createElement("select");
		golferDD.options[0] = new Option("", "");
		for(i=1;i<5;i++){
			golferDD.options[i] = new Option(i, i);
		}
		var golferRow = document.getElementById("golfTable").insertRow(1);
		var golferCell = golferRow.insertCell(0);
		golferDD.name = "os8";
		golferDD.id = "golfers";
		golferDD.onchange = function(){changeTotalGolfers();};
		golferCell.innerHTML = "Number of Entrants ";
		golferCell.appendChild(golferDD);
		spanMath = document.createElement("span");
		spanMath.innerHTML = " x $300 = ";
		golferCell.appendChild(spanMath);
		spanGolfer = document.createElement("span");
		spanGolfer.id = "totalGolfers";
		spanGolfer.style.fontWeight = "bold";
		spanGolfer.innerHTML = "$0";
		golferCell.appendChild(spanGolfer);
		var eveningRow = document.getElementById("eveningTable").insertRow(1);
		var eveningCell = eveningRow.insertCell(0);
		eveningDD.name = "os9";
		eveningDD.id = "guests";
		eveningDD.onchange = function(){changeTotalEvening();};
		eveningCell.innerHTML = "Number of Attendees ";
		eveningCell.appendChild(eveningDD);
		spanMath = document.createElement("span");
		spanMath.innerHTML = " x $100 = ";
		eveningCell.appendChild(spanMath);
		spanEvening = document.createElement("span");
		spanEvening.id = "totalEvening";
		spanEvening.style.fontWeight = "bold";
		spanEvening.innerHTML = "$0";
		eveningCell.appendChild(spanEvening);
		document.getElementById("divAmount").removeChild(document.getElementById("spanDonation"));
		document.getElementById("divAmount").removeChild(document.getElementById("textDonation"));
	}
	
}