function ChkOA(dpN) // check online access status:
{
	if(da['online' + dpN].checked == false) da['p' + dpN + '_email'].className = 'i3a'; else da['p' + dpN + '_email'].className = 'i3b';
}


function NotEmpty(field, message)
{
	if(trim(da[field].value) == '')
	{
		if(da[field + 'F'] != undefined)
		{
			da[field + 'F'].style.color = 'red';
			da.last_red.value = field;
		}
		alert(message);
		da[field].focus();
		return false;
	}
	else return true;
}


function NotEmptyZip(field, message)
{
	if( (trim(da[field].value) == '') || (trim(da[field].value).length != 5) )
	{
		if(da[field + 'F'] != undefined)
		{
			da[field + 'F'].style.color = 'red';
			da.last_red.value = field;
		}
		alert(message);
		da[field].focus();
		return false;
	}
	else return true;
}


function NotEmptyDate(field)
{
	if(isDate(da[field].value, field) == false)
	{
		if(da[field + 'F'] != undefined)
		{
			da[field + 'F'].style.color = 'red';
			da.last_red.value = field;
		}

		return false;
	}
}



function NotEmptyPhone(field, mess)
{
	if(da[field].value.length != 14)
	{
		if(da[field + 'F'] != undefined)
		{
			da[field + 'F'].style.color = 'red';
			da.last_red.value = field;
		}

		alert(mess);
		da[field].value = '';
		da[field].focus();
		return false;
	}
}


function chkEmail(Ename)
{
	var x = trim(document.getElementsByName(Ename).item(0).value);
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;

	if(filter.test(x)) return true; else return false;
}




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 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 );
}


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 isDate(dtStr, field)
{
	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 should be : mm/dd/yyyy")
		da[field].value = '';
		da[field].focus();
		return false;
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month for date.");
		da[field].focus();
		return false;
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day for date.");
		da[field].value = '';
		da[field].focus();
		return false;
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year.")
		da[field].value = '';
		da[field].focus();
		return false;
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date.");
		da[field].value = '';
		da[field].focus();
		return false;
	}
	return true
}

function RetCityN(partN)
{
	var pZip = parseInt(partN) + 2;
	return pZip;
}