function cal_call_back(y,m,d) {
	var date = addZero(m) + '/' + addZero(d) + '/' + y;
	
	document.getElementById('datedisplay1a').value = date;
}

function addZero(i) {
	if (i >= 0 && i <= 9) i = '0' + i;
return i;
}


// number of input text fields
var npflen = 25;

// current time
var now = new Date();

// yesterday
now.setDate(now.getDate()-1);

// days off
var daysOff = [0,4];

// Calendar popup date selector
var cal = new CalendarPopup();

cal.setReturnFunction('cal_call_back');

cal.addDisabledDates(null,formatDate(now,"yyyy-MM-dd")); // disable dates before today
cal.setDisabledWeekDays(daysOff);

cal.addDisabledDates('03/09/2012');cal.addDisabledDates('03/10/2012');//cal.showNavigationDropdowns();

cal.showYearNavigation(); // get calendar ready


function showCalendar() {
	document.forms['dateform1'].datedisplay1a.value = '02/22/2012';
	cal.select(document.forms['dateform1'].datedisplay1a, 'datebutton1a','MM/dd/yyyy', document.forms['dateform1'].datedisplay1a.value);
	document.forms['dateform1'].datedisplay1a.value = 'Choose Date';
}

function toggleNewPatient() {
	var state = document.getElementById('newPat').checked;
	
	
	// is a new patient show the new patient form
	if (state) {
		document.getElementById('newPatientForm').className = "whiteOut";
		
		for (var i = 0; i < npflen; i++) {
			try {document.getElementById('npf' + i).readOnly = false;}
			catch (err) {continue;}
		}
	}
	else {
		document.getElementById('newPatientForm').className = "grayOut";
		
		for (var i = 0; i < npflen; i++) {
			try {document.getElementById('npf' + i).readOnly = true;}
			catch (err) {continue;}
		}
	}
}
window.onload = toggleNewPatient;


function submitAppointment() {
	if (document.getElementById('fName').value.length == 0) {
alert('Please provide your First Name.');
document.getElementById('fName').focus();

return false;
	}
	
	if (document.getElementById('lName').value.length == 0) {
alert('Please provide your Last Name.');
document.getElementById('lName').focus();

return false;
	}
	
	if (document.getElementById('eAdd').value.length == 0) {
var conf = confirm('You have NOT provided an email address. With out one we can not send you a reminder about your appointment.\r\n\r\nAre you sure you want to continue?');

if (!conf) {
	document.getElementById('eAdd').focus();
	
	return false;
}
	}
	
	
return true;
}