function showDate(){
	document.write("<option value='' selected>DD</option>");
	for(var i=1;i<=31;i++){
		document.write("<option value="+i+">"+i+"</option>");
	}
	
}

function showMonth(){
	var arr = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
	document.write("<option value='' selected>MM</option>");
	for(var i=0;i<12;i++){
		document.write("<option value="+arr[i]+">"+arr[i]+"</option>");
	}
	
}

function showYear(){
	var objDate =	new Date();
	var intPresentYear = objDate.getFullYear();
	var intStartYear = 1920;
	var intEndYear	  = intPresentYear - 17;
	
	document.write("<option value='' selected>YY</option>");
	for(var i=intStartYear;i<=intEndYear;i++){
		document.write("<option value="+i+">"+i+"</option>");
	}
	
}