function CheckForm() {
	var form = document.getElementById("registrationform");
	
	if (form.firstName.value == '' || form.lastName.value == '' || form.email.value == '') {
		alert('You must provide a first and last name, and an email address.');
		return false;
	}
	else if (form.address1.value == '' || form.city.value == '' || form.state.value == '' || form.zip.value == '') {
		alert('You must provide a complete address including street, city, state and zipcode.');
		return false;
	}
	else if (form.emergencyContact.value == '' || form.emergencyPhone.value == '') {
		alert('You must provide an emergency contact name and phone number.');
		return false;
	}
	else if (form.paymentOption[0].checked == false && form.paymentOption[1].checked == false) {
		alert('You must select a payment method.');
		return false;
	}
	else if (form.waiver.checked == false) {
		alert('You must read and agree to the waiver by clicking the checkbox.');
		return false;
	}
	else if (form.challengeAnswer.value != 'five') {
		alert('Seriously? You do know that 2+3 equals 5, which is spelt \'five\'?');
		return false;
	}
	
	
	return true;
}

function ToggleSizeSelect(gender) {
	document.getElementById("unisexSize").style.display = gender ? "none" : "";
	document.getElementById("ladiesSize").style.display = gender ? "" : "none";
}