// a simple check form
	function _display_error_message(element, messageAttr, messageText) {
		var elementLbl = document.getElementById(element.name + '_lbl');
		if ( elementLbl && ((messageAttr && eval('elementLbl.attributes.' + messageAttr)) || messageText) ) {
			if ( !elementLbl.attributes.originalHTML )
				elementLbl.setAttribute('originalHTML',elementLbl.innerHTML);
			
			var originalText = '';
			if ( elementLbl.attributes.originalHTML )
				originalText = elementLbl.attributes.originalHTML.value;
			
			if ( messageText )
				elementLbl.innerHTML = '<span class="warning_text">'+ messageText + '</span><BR>' + originalText;
			else
				elementLbl.innerHTML = '<span class="warning_text">'+(eval('elementLbl.attributes.' + messageAttr).value)+ '</span><BR>' + originalText;

		} else if ( elementLbl && messageAttr && eval('element.attributes.' + messageAttr)) {
			return (eval('elementLbl.attributes.' + messageAttr).value)+ '<BR>';
		} else if ( element && messageAttr && eval('element.attributes.' + messageAttr)) {
			return (eval('element.attributes.' + messageAttr).value)+ '<BR>';
		} else if ( messageText ) {
			return messageText + '<BR>';
		} else 
			return ( element.name + ' is required. <BR>' );
		
		return '';
	}
	
	
	function _check_elements(elementsArray) {
		var rtn = true;
		var statusText = '';
		
		//reset everything
		for ( var i = 0; i < elementsArray.length; i++ ) {
				var element = elementsArray[i];
				var elementLbl = document.getElementById(element.name + '_lbl');
				if ( elementLbl && elementLbl.attributes.originalHTML ) {
					elementLbl.innerHTML = elementLbl.attributes.originalHTML.value;
					elementLbl.removeAttribute('originalHTML');
				}
		}

		//check for required
		for ( var i = 0; i < elementsArray.length; i++ ) {
			var element = elementsArray[i];
			
			// if field required, and blank, throw error and cancel submit
			if ( element.attributes.required && (element.attributes.required.value == 'true' || element.attributes.required.value == '1')) 
			{
				var elementLbl = document.getElementById(element.name + '_lbl');
				if ( ((element.type == 'text' || element.type == 'textarea' || element.type == 'password') && element.value.length < 1 ) ||
					 (element.type == 'checkbox' && !element.checked) ) {
					statusText = statusText + _display_error_message(element, 'message', null);
					rtn =  false;
				} else if ( ( element.type == 'select-one' ) && (element.options[0].value.length < 1) && (element.selectedIndex == 0) ) {
						
					statusText = statusText +  _display_error_message(element, 'message', null);
					rtn =  false;
			
				} else if ( element.type == 'radio' ) {
					radioGroup = elementsArray[element.name];
					isChecked = false;
					for ( j=0; j<radioGroup.length; j++ ) {
						if ( radioGroup[j].checked ) {
							isChecked = true;
						}
					}

					if (! isChecked) {
						statusText = statusText +  _display_error_message(element, 'message', null);
						rtn =  false;
					}
					
					//check minimum length
				} else if ( element.attributes.min && element.attributes.min.value) {
					if ( (element.type == 'text' || element.type == 'password') && elementsArray[i].value.length < elementsArray[i].attributes.min.value ) {
						statusText = statusText +  _display_error_message(element, 'message_min', null);
						rtn =  false;
					}
				}
			}
		}
		
		//also check for dd_required ... we must move away from "required" as that is defined by HTML5 and using causes .... issues
		for ( var i = 0; i < elementsArray.length; i++ ) {
			var element = elementsArray[i];
			
			// if field required, and blank, throw error and cancel submit
			if ( element.attributes.dd_required && (element.attributes.dd_required.value == 'true' || element.attributes.dd_required.value == '1')) 
			{
				var elementLbl = document.getElementById(element.name + '_lbl');
				if ( ((element.type == 'text' || element.type == 'textarea' || element.type == 'password') && element.value.length < 1 ) ||
					 (element.type == 'checkbox' && !element.checked) ) {
					statusText = statusText + _display_error_message(element, 'message', null);
					rtn =  false;
				} else if ( ( element.type == 'select-one' ) && (element.options[0].value.length < 1) && (element.selectedIndex == 0) ) {
						
					statusText = statusText +  _display_error_message(element, 'message', null);
					rtn =  false;
			
				} else if ( element.type == 'radio' ) {
					radioGroup = elementsArray[element.name];
					isChecked = false;
					for ( j=0; j<radioGroup.length; j++ ) {
						if ( radioGroup[j].checked ) {
							isChecked = true;
						}
					}

					if (! isChecked) {
						statusText = statusText +  _display_error_message(element, 'message', null);
						rtn =  false;
					}
					
					//check minimum length
				} else if ( element.attributes.min && element.attributes.min.value) {
					if ( (element.type == 'text' || element.type == 'password') && elementsArray[i].value.length < elementsArray[i].attributes.min.value ) {
						statusText = statusText +  _display_error_message(element, 'message_min', null);
						rtn =  false;
					}
				}
			}
		}
		
		//check for valid email address fields
		for ( var i = 0; i < elementsArray.length; i++ ) {
			// if field required, and blank, throw error and cancel submit
			element = elementsArray[i];
			if (element.type == 'text' && element.attributes.email && (element.attributes.email.value == 'true' || element.attributes.email.value == '1') ) {
				var emailCheckMsg = emailCheck(element.value, false);
				if ( emailCheckMsg != true ) {
					statusText = statusText +  _display_error_message(element, null, emailCheckMsg);
					rtn =  false;
				}
			}
			
			// new optional email type can be empty
			if (element.type == 'text' && element.attributes.optional_email && (element.attributes.optional_email.value == 'true' || element.attributes.optional_email.value == '1') ) {
				var emailCheckMsg = emailCheck(element.value, true);
				if ( emailCheckMsg != true ) {
					statusText = statusText +  _display_error_message(element, null, emailCheckMsg);
					rtn =  false;
				}
			}			
			
		}
				
		//check for valid telephone fields
		for ( var i = 0; i < elementsArray.length; i++ ) {
			element = elementsArray[i];
			if (element.type == 'text' && (element.value.length > 0) && element.attributes.telephone && (element.attributes.telephone.value == 'true' || element.attributes.telephone.value == '1') ) {
				var telephoneCheckMsg = telephoneCheck(element.value);
				if ( telephoneCheckMsg != true ) {
					statusText = statusText +  _display_error_message(element, null, telephoneCheckMsg);
					rtn =  false;
				}
			}
		}
				
		//check for matching passwords; assumes there are only 2 password fields on the page
		var firstPassword = null;
		for ( var i = 0; i < elementsArray.length; i++ ) {
			// if field required, and blank, throw error and cancel submit
			element = elementsArray[i];
			if (element.type == 'password') {
				if ( !firstPassword )
					firstPassword = element.value;
				else if ( element.value != firstPassword) {
					statusText = statusText +  _display_error_message(element, 'message_match', null);
					rtn =  false;
				}
			}
		}
		
		//check for matching email addresses
		//search this form for an email field
		var email = null;
		var cnfirm = null;
		for ( var i = 0; i < elementsArray.length; i++ ) {
				var element = elementsArray[i];
				if ( element.name == 'primary_email' ) {
					email = element;
				}
				if ( element.name == 'confirm_email_address' ) {
					cnfirm = element;
				}
		}
		
		//email = document.getElementById('primary_email');
		//cnfirm = document.getElementById('confirm_email_address');
		if ( email && cnfirm ) {
			if ( cnfirm.value != email.value ) {
				var cnfirmLbl = document.getElementById('confirm_email_address_lbl');
				statusText = statusText +  _display_error_message(cnfirm, null, cnfirmLbl.attributes.message.value);
				rtn = false;
			}
		} 
		
		//check for valid hour fields
		for ( var i = 0; i < elementsArray.length; i++ ) {
			element = elementsArray[i];
			if (element.type == 'text' && (element.value.length > 0) && 
			  element.attributes.hour && (element.attributes.hour.value == 'true' || 
			  element.attributes.hour.value == '1') ) {
				var hourCheckMsg = hourCheck(element.value);
				if ( hourCheckMsg != true ) {
					statusText = statusText +  _display_error_message(element, null, hourCheckMsg);
					rtn =  false;
				}
			}
		}
		
		//check for valid minutes fields
		for ( var i = 0; i < elementsArray.length; i++ ) {
			element = elementsArray[i];
			if (element.type == 'text' && (element.value.length > 0) && 
			  element.attributes.minutes && (element.attributes.minutes.value == 'true' || 
			  element.attributes.minutes.value == '1') ) {
				var minutesCheckMsg = minutesCheck(element.value);
				if ( minutesCheckMsg != true ) {
					statusText = statusText +  _display_error_message(element, null, minutesCheckMsg);
					rtn =  false;
				}
			}
		}
		
		//check for valid number  fields
		for ( var i = 0; i < elementsArray.length; i++ ) {
			element = elementsArray[i];
			if (element.type == 'text' && (element.value.length > 0) && 
			  element.attributes.number && (element.attributes.number.value == 'true' || 
			  element.attributes.number.value == '1') ) {
				var numberCheckMsg = numberCheck(element.value);
				if ( numberCheckMsg != true ) {
					statusText = statusText +  _display_error_message(element, null, numberCheckMsg);
					rtn =  false;
				}
			}
		}		
		
		//check for valid money fields - is a positive number and not zero
		for ( var i = 0; i < elementsArray.length; i++ ) {
			element = elementsArray[i];
			if (element.type == 'text' && (element.value.length > 0) && 
			  element.attributes.money && (element.attributes.money.value == 'true' || 
			  element.attributes.money.value == '1') ) {
				var moneyCheckMsg = moneyCheck(element.value);
				if ( moneyCheckMsg != true ) {
					statusText = statusText +  _display_error_message(element, null, moneyCheckMsg);
					rtn =  false;
				}
			}
		}			
		
		if (  rtn == false ) {
			var statusDiv = document.getElementById('errorMsg');
			statusDiv.style.display = 'block';
			statusTextDiv = document.getElementById('errorMsgText');
			statusTextDiv.innerHTML = 'Please correct the following errors on the page below.  ' + statusText;
			scroll(0,0);
		}
		
		return rtn;
	}
	
	function _check_form(form) {
	
		return _check_elements(form.elements);
	
	}	
	

function telephoneCheck(telephoneStr) {
	var teleArr=telephoneStr.split("-");
	
	var isValid = true;
	if ( teleArr.length != 3 ) {
		isValid = false;
	}
	
	if ( isValid ) {
		if ( teleArr[0].length != 3 ) {
			isValid = false;
		} else if ( teleArr[1].length != 3 ) {
			isValid = false;
		} else if ( teleArr[2].length != 4 ) {
			isValid = false;
		}
	}
	
	if ( isValid && isNaN(teleArr[0])) {
		isValid = false;
	} else if ( isValid && isNaN(teleArr[1])) {
		isValid = false;
	} else if ( isValid && isNaN(teleArr[2])) {
		isValid = false;
	}
	
	if ( !isValid )
		return "Telphone numbers must be in the format: ###-###-####";

	return true;
}


function emailCheck (emailStr, allowEmpty) {
	
	if (allowEmpty && (emailStr == null || emailStr == ""))
		return true;
	
	emailStr = emailStr.toLowerCase();
	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum|us|uk)$/;
	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);
	if (matchArray==null) {
		if (allowEmpty) {
			return "The email address you entered is incorrect.";
		} else {
			return "The email address you entered is empty or incorrect.";			
		}
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	for (i=0; i<user.length; i++) {
	if (user.charCodeAt(i)>127) {
	return "The user name of the email address you entered contains invalid characters.";
	   }
	}
	for (i=0; i<domain.length; i++) {
	if (domain.charCodeAt(i)>127) {
	return "The domain name of the email address you entered contains invalid characters.";
	   }
	}
	if (user.match(userPat)==null) {
	return "The user name of the email address you entered seems incorrect.";
	}
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
	for (var i=1;i<=4;i++) {
	if (IPArray[i]>255) {
	return "The IP address of the email address you entered seems incorrect.";

	   }
	}
	return true;
	}
	
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
	if (domArr[i].search(atomPat)==-1) {
	return "The domain name for the email address you entered seems incorrect.";
	   }
	}
	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	domArr[domArr.length-1].search(knownDomsPat)==-1) {
	return "The email address you entered must end in a well-known domain or two letter " + "country.";
	}
	if (len<2) {
	return "The email address you entered is missing a hostname.";
	}
	return true;
}

//defines input as an integer  
function isInteger(value) {  
  return (parseInt(value) == value);  
}  

function hourCheck(hourStr) {

	if (isNaN(hourStr))
		return "The hour entry is not a number.";
		
	if (!isInteger(hourStr))	
		return "The hour entry is not an integer.";
		
	if (hourStr < 0 || hourStr > 12)
		return "The hour entry must be a number from 0 to 12.";	

	return true;
}

function minutesCheck(minutesStr) {

	if (isNaN(minutesStr))
		return "The minutes entry is not a number.";
		
	if (!isInteger(minutesStr))	
		return "The minutes entry is not an integer.";		
		
	if (minutesStr < 0 || minutesStr > 59)
	{
		return "The minutes entry must be a number from 0 to 59.";		
	}

	return true;
}

function numberCheck(numberStr) {

	if (isNaN(numberStr))
		return "The entry is not a number.";
		
	return true;
}

function moneyCheck(moneyStr) {

	if (isNaN(moneyStr))
		return "The entry is not a number.";
		
	if (moneyStr == 0)
		return "The entry is zero. Please enter a non-zero amount.";
		
	if (moneyStr < 0)	
		return "The entry is less than zero. Please enter a positive amount.";
		
	return true;
}