function checkdate(objName) {
	if(dateFocus && (focusObj != objName))
	{
		return;
	}
	dateFocus = true;
	focusObj = objName;
var datefield = objName;
	if(buttonVal == "Save")
	{
		if(objName.value == null || objName.value == "" || objName.value == "DD-MM-YYYY")
		{
			objName.value = "";
			dateFocus = false;
			return true;
		}
	}
	else if(buttonVal == "Submit")
	{
		if(objName.value == null || objName.value == "" || objName.value == "DD-MM-YYYY")
		{
			objName.value = "";
			dateFocus = true;
			datefield.focus();
			return false;
		}
	}
	else
	{
		if(objName.value == null || objName.value == "" || objName.value == "DD-MM-YYYY")
		{
			objName.value = "DD-MM-YYYY";
			dateFocus = false;
			return true;
		}
	}
	if (chkdate(objName) == false) {
		datefield.select();
		alert("That date is invalid.  Please try again.");
		dateFocus = true;
		datefield.focus();
		return false;
	}
	else {
		dateFocus = false;
		return true;
   }

}
function chkdate(objName) {
//var strDatestyle = "US"; //United States date style
var strDatestyle = "EU";  //European date style
var strDate;
var strDateArray;
var strDay;
var strMonth;
var strYear;
var intday;
var intMonth;
var intYear;
var booFound = false;
var datefield = objName;
var strSeparatorArray = new Array("-"," ","/",".");
var intElementNr;
var err = 0;
var strMonthArray = new Array(12);
strMonthArray[0] = "Jan";
strMonthArray[1] = "Feb";
strMonthArray[2] = "Mar";
strMonthArray[3] = "Apr";
strMonthArray[4] = "May";
strMonthArray[5] = "Jun";
strMonthArray[6] = "Jul";
strMonthArray[7] = "Aug";
strMonthArray[8] = "Sep";
strMonthArray[9] = "Oct";
strMonthArray[10] = "Nov";
strMonthArray[11] = "Dec";
strDate = datefield.value;
if (strDate.length < 1) {
return false;
}
for (intElementNr = 0; intElementNr < strSeparatorArray.length; intElementNr++) {
if (strDate.indexOf(strSeparatorArray[intElementNr]) != -1) {
strDateArray = strDate.split(strSeparatorArray[intElementNr]);
if (strDateArray.length != 3) {
err = 1;
return false;
}
else {
strDay = strDateArray[0];
strMonth = strDateArray[1];
strYear = strDateArray[2];
}
booFound = true;
   }
}
if (booFound == false) {
if (strDate.length>5) {
strDay = strDate.substr(0, 2);
strMonth = strDate.substr(2, 2);
strYear = strDate.substr(4);
   }
}
if(strDay == null || strMonth == null || strYear == null)
	{
		return false;
	}
	{
		var charpos = strYear.search("[^0-9]"); 
		if(strYear.length > 0 &&  charpos >= 0) 
		{ 
			return false; 
		}
	}


if (strYear.length == 2) {
strYear = '20' + strYear;
}
// US style
if (strDatestyle == "US") {
strTemp = strDay;
strDay = strMonth;
strMonth = strTemp;
}

intday = parseInt(strDay, 10);
if (isNaN(intday)) {
err = 2;
return false;
}
intMonth = parseInt(strMonth, 10);
if (isNaN(intMonth)) {
for (i = 0;i<12;i++) {
if (strMonth.toUpperCase() == strMonthArray[i].toUpperCase()) {
intMonth = i+1;
strMonth = strMonthArray[i];
i = 12;
   }
}
if (isNaN(intMonth)) {
err = 3;
return false;
   }
}
intYear = parseInt(strYear, 10);
if (isNaN(intYear)) {
err = 4;
return false;
}
if (intMonth>12 || intMonth<1) {
err = 5;
return false;
}
if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intday > 31 || intday < 1)) {
err = 6;
return false;
}
if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1)) {
err = 7;
return false;
}
if (intMonth == 2) {
if (intday < 1) {
err = 8;
return false;
}
if (LeapYear(intYear) == true) {
if (intday > 29) {
err = 9;
return false;
}
}
else {
if (intday > 28) {
err = 10;
return false;
}
}
}
var strDayField;
var strMonthField;

if(intday < 10)
{
	strDayField = "0" + intday;
}
else
{
	strDayField = intday;
}
if(intMonth < 10)
{
	strMonthField = "0" + intMonth;
}
else
{
	strMonthField = intMonth;
}
if (strDatestyle == "US") {
datefield.value = strMonthArray[intMonth-1] + "-" + intday+"-" + strYear;
//datefield.value = strMonthField + "-" + strDayField + "-" + strYear;
}
else {
datefield.value = intday + "-" + strMonthArray[intMonth-1] + "-" + strYear;
//datefield.value = strDayField + "-" + strMonthField + "-" + strYear;
}
return true;
}
function LeapYear(intYear) {
if (intYear % 100 == 0) {
if (intYear % 400 == 0) { return true; }
}
else {
if ((intYear % 4) == 0) { return true; }
}
return false;
}
function doDateCheck(from, to) {
	var fromvalue = from.value.split("-");
	var strfromvalue = fromvalue[0]+" "+fromvalue[1]+" "+fromvalue[2];
	var tovalue = to.value.split("-");
	var strtovalue = tovalue[0]+" "+tovalue[1]+" "+tovalue[2];
if (Date.parse(strfromvalue) <= Date.parse(strtovalue)) {
return true;
}
else {
if (from.value == "" || to.value == "") 
	{
	return false;
		alert("Both dates must be entered.");
	}
else 
	{
	return false;
//alert("To date must occur after the from date.");
	}
   }
   return true;
}