function notChecked(formName,fieldName,Description)
{
	var intValue;
	intValue = document.forms[formName].elements[fieldName].checked;
	if(!intValue)
	{
		alert(Description + ".");
		document.forms[formName].elements[fieldName].focus();
		return true;
	} else {return false;}
}

function notExists(formName,fieldName,Description)
{
	var strCont;
	strCont = document.forms[formName].elements[fieldName].value;
	strCont = strCont.match(/^\s*$/);
	if(strCont != null)
	{
		alert(Description + " is a required field.");
		document.forms[formName].elements[fieldName].focus();
		return true;
	} else {return false;}
}
	
function notSelected(formName,fieldName,Description)
{
	var intValue;
	intValue = document.forms[formName].elements[fieldName].value;
	if(intValue < 1)
	{
		alert("A selection must be made for " + Description + ".");
		document.forms[formName].elements[fieldName].focus();
		return true;
	} else {return false;}
}
	
function notNumeric(formName,fieldName,Description)
{
	if(notExists(formName,fieldName,Description)) return true;
	var strCont;
	strCont = document.forms[formName].elements[fieldName].value;
	if(isNaN(strCont))
	{
		alert(Description + " must be a numeric value.");
		document.forms[formName].elements[fieldName].focus();
		return true;
	} else {return false;}
}

function notLength(formName,fieldName,Description,Length)
{
	if(notExists(formName,fieldName,Description)) return true;
	var strCont;
	strCont = document.forms[formName].elements[fieldName].value;
	if(strCont.length < Length)
	{
		alert(Description + " must be at least " + Length + " characters long.");
		document.forms[formName].elements[fieldName].focus();
		return true;
	} else {return false;}
}

function notPhone(formName,fieldName,Description)
{
	if(notExists(formName,fieldName,Description)) return true;
	var strCont;
	strCont = document.forms[formName].elements[fieldName].value;
	for(var i = 0;i <= strCont.length-1;i++)
	{
		if(isNaN(strCont.charAt(i)) && strCont.charAt(i) != "-" || strCont.charAt(i) == " ")
		{
			alert(Description + " can only contain numbers and dashes.");
			document.forms[formName].elements[fieldName].focus();
			return true;
		}
	}
	return false;
}

function notEmail(formName,fieldName,Description)
{
	if(notExists(formName,fieldName,Description)) return true;
	var strCont;
	strCont = document.forms[formName].elements[fieldName].value;
	var re = /[\w\.]+@[\w\.]+\.[\w\.]+/;
	var aryMatch = strCont.match(re);
	if(!aryMatch)
	{
		alert(Description + " must be a valid E-mail address.");
		document.forms[formName].elements[fieldName].focus();
		return true;
	} else {return false;}
}

var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function notDate(formName, fieldName, Description){
	if(notExists(formName,fieldName,Description)) return true;
	
	var dtStr= document.forms[formName].elements[fieldName].value;
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format in " + Description + " should be : mm/dd/yyyy")
		document.forms[formName].elements[fieldName].focus();
		
		return true
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month in " + Description)
		document.forms[formName].elements[fieldName].focus();
		
		return true
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day in " + Description)
		document.forms[formName].elements[fieldName].focus();
		
		return true
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear + " in " + Description)
		document.forms[formName].elements[fieldName].focus();
		
		return true
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date in " + Description)
		document.forms[formName].elements[fieldName].focus();
		
		return true
	}
return false
}

// supoort functions for not date
function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}
function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}