<!--
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.getElementById('full_registration');
 var dob,theMonth,theDay;
 //var regZipCode = /(^\d{5}$)|(^\d{5}-\d{4}$)|(^[A-Z]\d[A-Z] \d[A-Z]\d$)|(^[A-Z]\d[A-Z]\d[A-Z]\d$)/i;
 var regZipCode = /(^\d{5}$)|(^\d{5}-\d{4}$)|(^[A-Z]\d[A-Z]\d[A-Z]\d$)/i;
  var regNum = /\D/;
 
 if (f.first.value == "") { 
 	alert('Please enter your first name.'); 
 	f.first.focus(); 
 	return false; 
 }
 
 if (f.last.value == "") { 
 	alert('Please enter your last name.'); 
 	f.last.focus(); 
 	return false; 
 }

 if (!f.email.value.match(/^\S+@\S+\.\S+$/)) {
   alert('Please enter a valid e-mail address.');
   f.email.select();
   f.email.focus();
   return false;
   }

 if (f.address1.value == "") { alert('Please enter your mailing address.'); f.address1.focus(); return false; }

 if (f.city.value == "") { alert('Please enter your city.'); f.city.focus(); return false; }

 if (f.state.value == "") { alert('Please enter your state.'); f.state.focus(); return false; }

 if (!f.zip.value.match(regZipCode)) { 
	alert('Please enter a valid Zip Code or Postal Code with no spaces or dashes.');
 	f.zip.select(); 
 	f.zip.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();
     //f.dob_month.select(); 
     return false; 
  }
 } 
 else {
  alert('Please enter a valid month of birth.');
  f.dob_month.focus();
  //f.dob_month.select(); 
  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(); 
      //f.dob_day.select(); 
      return false; 
   }
 }
 else {
   alert('Please enter a valid day of birth.'); 
   f.dob_day.focus(); 
   //f.dob_day.select(); 
   return false; 
 }

 if(!f.dob_year.value.match(/\d{4}/) || f.dob_year.value=="0000") { 
    alert('Please a valid year of birth (xxxx).'); 
    f.dob_year.focus(); 
    //f.dob_year.select(); 
    return false; 
 }
 

 if (f.phone.value.match(regNum)) {
         alert('Please enter only numbers for your phone.');
         f.phone.focus();
         return false;
 } 
  if (f.phone.value.length < 10) {
          alert('Please be sure you enter both your area code and phone number.');
          f.phone.focus();
          return false;
 }
 if (f.college.value == "") { alert('Please enter College.'); f.college.focus(); return false; }
 
  if (f.college_year.value == "") { alert('Please select College Year.'); f.college_year.focus(); return false; }

 
 var age = howOld(f.dob_day.value, f.dob_month.value, f.dob_year.value);
 
 if(age >= 18 && ReadCookie("register") != "no") {
    dob = f.dob_year.value + "-" + f.dob_month.value + "-" + f.dob_day.value;
    f.dob_full.value = dob;
 }
 else {
 	WriteCookie('register','no');
    alert('Sorry we are currently not offering this service');
    return false;
 }

//f.submit();
}
// -->