/* Add a new receiver to the receiver list */
function addreceiver(nameHeader, emailHeader){
	//Add the labels
	var tr = document.getElementById('receiverTable').insertRow(document.getElementById("receiverTable").rows.length);
	var td1 = tr.insertCell(0);
	var td2 = tr.insertCell(1);
	td1.innerHTML = nameHeader;
	td2.innerHTML = emailHeader;

	//Add the fields
	var tr1 = document.getElementById('receiverTable').insertRow(document.getElementById("receiverTable").rows.length);
	var td3 = tr1.insertCell(0);
	var td4 = tr1.insertCell(1);
	var nameInput = document.createElement("input");
	var emailInput = document.createElement("input");
	
	nameInput.type = "text";
	nameInput.name = "receiverName" + (document.getElementById("receiverTable").rows.length / 2);
	nameInput.style.width = "300px";
	emailInput.type = "text";
	emailInput.name = "receiverEmail" + (document.getElementById("receiverTable").rows.length / 2);
	emailInput.style.width = "300px";
	td3.appendChild(nameInput);
	td4.appendChild(emailInput);	
	
	//Enable the "Remove receiver" button
	if (document.getElementById("receiverTable").rows.length / 2 > 1){
		document.getElementById("removeReceiver").disabled = false;
	}
}


/* Remove a receiver from the receiver list */
function removereceiver(){
	//remove the last two table rows
	document.getElementById('receiverTable').deleteRow(document.getElementById("receiverTable").rows.length - 1);
	document.getElementById('receiverTable').deleteRow(document.getElementById("receiverTable").rows.length - 1);
	
	//Enable the "Add receiver" button
	if (document.getElementById("receiverTable").rows.length / 2 == 1){
		document.getElementById("removeReceiver").disabled = true;
	}
}