function calAge()
{
if(document.getElementById('mm').options[document.getElementById('mm').selectedIndex].value == "MM" || document.getElementById('dd').options[document.getElementById('dd').selectedIndex].value == "DD" || document.getElementById('yyyy').options[document.getElementById('yyyy').selectedIndex].value == "YYYY")
	{
		alert("Please enter your date of birth correctly.");
		return false;
	}
var mm = document.getElementById('mm').value
var bday = document.getElementById('dd').value
var byear = document.getElementById('yyyy').value
var year = new Date();
var year2 = year.getYear();
var year3 = (year < 2000) ? year2 + 1900 : year2;
thedate = new Date();
mm2 = thedate.getMonth() + 1;
dd2 = thedate.getDate();
yy2 = thedate.getYear();
//alert(yy2);
if (yy2 < 120) yy2 += 1900
yourage = yy2 - byear;
if (mm2 < mm) yourage--;
if ((mm2 == mm) && (dd2 < bday)) yourage--;
TMonth = new Array(
'January','February','March',
'April','May','June','July',
'August','September','October',
'November','December'
);
CurMonth = mm - 1;
bmonth = TMonth[CurMonth];
//alert(yourage);
if(yourage<18)
	{
	
		alert("You are not allowed to enter the website because you are not of legal drinking age.");
		return false;
	
	}
}