function isSelected(v, n) {
	if (v == 0) {
		return "* " + n + " not selected\n"
	} else {
		return ""
	}		
	
}			

function isNotBlank(v, n) {
	if (v == "") {
		return "* " + n + " is blank\n"
	} else {
		return ""
	}		
}			

function isNumber(v, n) {
	if (v == "") {
		return "* " + n + " is blank\n"
	} else {
		isOK = true
		for(i = 0; i < v.length; i++) {
			ch = v.charAt(i)
			isOK = (isOK && ((ch == ".") || (!isNaN(ch))))
		}

		if (isOK) {
			return ""
		} else {
			return "* " + n + " is not a number\n"
		}		
	}	
}			

// ------------------ Date validation
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, fldName){
	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")
		//return false
		return "* " + fldName + " - Not in mm/dd/yyyy format\n"
	}
	if (strMonth.length<1 || month<1 || month>12){
		//alert("Please enter a valid month")
		//return false
		return "* " + fldName + " - Not a valid month\n"
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		//alert("Please enter a valid day")
		//return false
		return "* " + fldName + " - Not a valid day\n"
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		//return false
		return "* " + fldName + " - Not a valid 4 digit year between "+minYear+" and "+maxYear + "\n"
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		//alert("Please enter a valid date")
		//return false
		return "* " + fldName + " - Not a valid date\n"
	}
//return true
return ""
}


// ------------------ End of Date validation


function copyRightMsg(holder)	{
	yr = curYear() 
	//msg = yr
	msg = "<font color=#5189FF size=-2 face=Verdana>© " + holder + ", " + yr + "</font>"
	//return msg
	document.write(msg)
}
function curYear()	{
	now = Date()
	return now.substring(20)
}