<!--
function ReadCookie (CookieName)
{
    var CookieString = document.cookie;
    var CookieSet = CookieString.split (';');
    var SetSize = CookieSet.length;
    var CookiePieces
    var ReturnValue = "";
    var x = 0;
    
    for (x = 0; ((x < SetSize) && (ReturnValue == "")); x++)
    {
        CookiePieces = CookieSet[x].split ('=');

        if (CookiePieces[0].substring (0,1) == ' ')
        {
            CookiePieces[0] = CookiePieces[0].substring (1, CookiePieces[0].length);
        }
        
        if (CookiePieces[0] == CookieName)
        {
            ReturnValue = CookiePieces[1];
        }
    }
    
    return ReturnValue;
}


function WriteCookie (cookieName, cookieValue, expiry)
{
    var expDate = new Date();

    if(expiry)
    {
        expDate.setTime (expDate.getTime() + expiry);
        document.cookie = cookieName + "=" + escape (cookieValue) + "; expires=" + expDate.toGMTString();
    }
    else
    {
        document.cookie = cookieName + "=" + escape (cookieValue);
    }
}

<!--
function fixDate(date) {
  var base = new Date(0);
  var skew = base.getTime();
  if (skew > 0) { date.setTime(date.getTime() - skew); }
}

// determine age
function howOld(day,month,year) {
    var c = new Date(); // a new instance
    fixDate(c);

    var thisDay = c.getDate();
    var thisMonth = c.getMonth() + 1;
    var thisYear = c.getFullYear();

    var yearsold = thisYear - year; 
    var monthsold = 0;
    var daysold = 0;
    var age = '';

    if (thisMonth >= month) {
        monthsold = thisMonth - month;
    }
    else {
        yearsold--;
        monthsold = thisMonth + 12 - month;
    }

    if (thisDay >= day) {
     daysold = thisDay - day;
    }
    else {
        if (monthsold > 0) {
            monthsold--;
        }
        else {
            yearsold--;
            monthsold += 11;
        }
        daysold = thisDay + 31 - day;
    }

    if (yearsold < 0) return '';

    if ((yearsold == 0) && (monthsold == 0) && (daysold == 0)) return '';

    if (yearsold > 0) {
        age = yearsold;
        if (yearsold > 1) age;
        age += ' ';
    }

    return age;
}

function doSubmit() {
 var f = document.email_registration;
 var dob,theMonth,theDay;

 if (!f.email.value.match(/^\S+@\S+\.\S+$/)) {
   alert('Please enter a valid e-mail address.');
   f.email.focus();
   return false;
   }
 
 /* Validate month: check for digits, then check:  1 <= month <= 12 */
 if(f.dob_month.value.match(/\d{1,2}/)) {
   theMonth = eval(f.dob_month.value);      
   if(!(theMonth <= 12 && theMonth >= 1)){
     alert('Please enter a valid month of birth.');
     f.dob_month.focus();
     return false; 
  }
 } 
 else {
  alert('Please enter a valid month of birth.');
  f.dob_month.focus();
  return false; 
 }
  
 /* Validate day: check for digits, then check:  1 <= day <= 31 */
 if(f.dob_day.value.match(/\d{1,2}/)) {
   theDay = eval(f.dob_day.value);
   if(!(theDay >= 1 && theDay <= 31)) {
      alert('Please enter a valid day of birth.'); 
      f.dob_day.focus(); 
      return false; 
   }
 }
 else {
   alert('Please enter a valid day of birth.'); 
   f.dob_day.focus(); 
   return false; 
 }

 if(!f.dob_year.value.match(/\d{4}/) || f.dob_year.value=="0000") { 
    alert('Please enter a valid year of birth (xxxx).'); 
    f.dob_year.focus(); 
    return false; 
 }
 

 
 var age = howOld(f.dob_day.value, f.dob_month.value, f.dob_year.value);
 var expdate = new Date ();
 expdate.setTime(expdate.getTime() +  (100 * 24 * 60 * 60 * 1000)); // a million years from now
 
 
 if(age >= 13 && ReadCookie("sorry") != "no") {
    dob = f.dob_year.value + "-" + f.dob_month.value + "-" + f.dob_day.value;
    f.dob_full.value = dob;
 }
 else {     
    if(document.getElementById('overlay')){
		$('#overlay').load('sorry.html #container',null,attachAnchorEvents);
	}else{
		window.location = 'sorry.html';
	}
    return false;
 }

 return true;
}