function checkMoney()
{
	var strValue = window.event.srcElement.value;
	if (strValue != '') {
		if (isMoney(strValue)==false){
			window.event.srcElement.focus();
			return false;
		}
	}

	return true;
} 

function isMoney(strValue){
	var revenueRE = /^\$?[0-9]+(,[0-9]{3})*(\.[0-9]{2})?$/; 
	if (!strValue.match(revenueRE)) { 
		alert('Dollar amount is not valid.' ); 
		return false; 
	} 
}


function checkTime()
{
	var strValue = window.event.srcElement.value;
	if (strValue != '') {
		if (isTime(strValue)==false){
			window.event.srcElement.focus();
			return false;
		}
	}

	return true;
} 


function isTime(strTime) {
	// Checks if time is in HH:MM:SS AM/PM format.
	// The seconds and AM/PM are optional.

	var timePat = /^(\d{1,2}):(\d{2})(:(\d{2}))?(\s?(AM|am|PM|pm))?$/;

	var matchArray = strTime.match(timePat);
	if (matchArray == null) {
		alert("Time is not in a valid format.");
		return false;
	}
	
	hour = matchArray[1];
	minute = matchArray[2];
	second = matchArray[4];
	ampm = matchArray[6];
	
	if (second=="") { second = null; }

	if (ampm=="") { ampm = null }
	
	if (hour < 0  || hour > 23) {
		alert("Hour must be between 1 and 12. (or 0 and 23 for military time)");
		return false;
	}
	
	if (hour <= 12 && ampm == null) {
		if (confirm("Please indicate which time format you are using.  OK = Standard Time, CANCEL = Military Time")) {
			alert("You must specify AM or PM.");
			return false;
		}
	}

	if  (hour > 12 && ampm != null) {
		alert("You can't specify AM or PM for military time.");
		return false;
	}
	
	if (minute<0 || minute > 59) {
		alert ("Minute must be between 0 and 59.");
		return false;
	}
	
	if (second != null && (second < 0 || second > 59)) {
		alert ("Second must be between 0 and 59.");
		return false;
	}
	return true;
}


function checkKey() {
	if (window.event.keyCode == 13){
		return false;
	}
	return true;
}

function checkDate()
{
	var strValue = window.event.srcElement.value;
	if (strValue != '') {
		if (isDate(strValue)==false){
			window.event.srcElement.focus();
			return false;
		}
	}

	return true;
} 

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

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,bSilent){

    if ((dtStr == null) || (dtStr == '')) return true;
	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)
	
	/* updated */
	
	for (var i = 1; i <= 1; 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) {
	    if (bSilent == undefined) {
	        alert("The date format should be : mm/dd/yyyy");
	    }
		return false
	}
	if (strMonth.length < 1 || month < 1 || month > 12) {
	    if (bSilent == undefined) {
	        alert("Please enter a valid month");
	    }
	    return false;
	}
	if (strDay.length < 1 || day < 1 || day > 31 || (month == 2 && day > daysInFebruary(year)) || day > daysInMonth[month]) {
	    if (bSilent == undefined) {
	        alert("Please enter a valid day");
	    }
		return false
	}
	if (strYear.length > 4 || strYear.length == 3 || strYear.length < 2) {
	    if (bSilent == undefined) {
	        alert("Please enter a valid 2 or 4 digit year between " + minYear + " and " + maxYear);
	    }
		return false
	}
	if (dtStr.indexOf(dtCh, pos2 + 1) != -1 || isInteger(stripCharsInBag(dtStr, dtCh)) == false) {
	    if (bSilent == undefined) {
	        alert("Please enter a valid date");
	    }
		return false
	}
return true
}