/*
Validation for the Required Fields on the Reservation Form
*/
 
 function isEmpty(s) {
     return ((s == null) || (s.length == 0))
 }
 
 function validate()
{

	var alert_message = "The following fields have not been filled out: \n";
	var alert_message_orig = "The following fields have not been filled out: \n";

	// Add variable declarations for form elements here
	var realname = document.reservform.realname.value;
	var email = document.reservform.email.value;
	var phone = document.reservform.phone.value;
	var peoplenum = document.reservform.peoplenum.value;
	var prefdate = document.reservform.prefdate.value;
	var preftime = document.reservform.preftime.value;
	
	// Add more 'if' statements here for each variable created

	if (isEmpty(realname))

		alert_message += "Name\n";
		
	if (isEmpty(email))

		alert_message += "E-mail\n";
		
	if (isEmpty(phone))

		alert_message += "Phone\n";
		
	if (isEmpty(peoplenum))

		alert_message += "Number of People\n";
		
	if (isEmpty(prefdate))

		alert_message += "Date\n";
		
	if (isEmpty(preftime))

		alert_message += "Preferred Time\n";
		
	if (alert_message_orig != alert_message)
	{
		alert(alert_message);
		return false;
	}
	else
		return true;	


}