function toggle(id) {
	if (document.getElementById(id).style.display == "none") {
		document.getElementById(id).style.display = "block";
	} else {
		document.getElementById(id).style.display = "none";
	}
}

function setAmount(amount) {
	document.getElementById("amount").value = amount.value;
}

function enableField() {
	document.getElementById("otherAmount").disabled = false;
}

function disableField() {
	document.getElementById("otherAmount").disabled = true;
	document.getElementById("otherAmount").value = "";
}