function isValidDate(d,convert) {
	//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 strSeparatorArray = new Array("-"," ","/",".");
	var intElementNr;
	var err = 0;
	var strMonthArray = new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
	strDate = d;
	if (strDate.length < 1) {
		return false;
	}
	if (strDate.toLowerCase()=="today" || strDate.toLowerCase()=="now"){return true;}

	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);
			
		}
		else
			return false;
	}
	
	// verify year part	2 or 4 digits
	if (strYear.length != 2 && strYear.length != 4) {return false;}
	if (isNaN(strYear)){return false;}
	// US style (swap month and day)
	if (strDatestyle == "US") {
		strTemp = strDay;
		strDay = strMonth;
		strMonth = strTemp;
	}

	// verify 1 or 2 digit integer day
	if (strDay.length<1 || strDay.length>2) {return false;}
	if (isNaN(strDay)){return false;}
	
	// month may be digits of characters, hence following check
	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;
		}
	}

	intDay=parseInt(strDay,10);
	intYear = parseInt(strYear, 10);

	if (intMonth>12 || intMonth<1) {
		err = 5;
		return false;
	}
	
	// day in month check
	if (intDay < 1 || intDay > 31){return false;}
		
	if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intDay > 30)) {
		return false;
	}
	
	if (intMonth == 2) {
		if (LeapYear(intYear)) {
		   if (intDay > 29) {return false;}
		}
		else 
		{
			if (intDay > 28) {return false;}
		}
	}
	
	if (!convert)
		return true;
	else
	{
		if (intYear<=99){intYear=intYear+2000;}
		return intDay+"/"+intMonth+"/"+intYear;
	}
}

function LeapYear(intYear)
{
    if ((intYear%4)==0)
           return true;          
    else
           return false;
}