//Form Validation for Form Name/ID: Form Name/Form ID

function checkFields(form) {
    var time=new Date();
    var year=time.getYear();
	var maxlength=50;
	
	if(form.sf_gender[0].checked == "" &&
	   form.sf_gender[1].checked == "" ) {
	   alert("Please enter your gender.");
	   form.sf_gender[0].focus();
	   return false;
	}

    else if ( isBlank(form.sf_first_nme.value)) {
        window.alert('Please enter your first name.');
        form.sf_first_nme.focus();
        return false;
    }
    else if ( isBlank(form.sf_last_nme.value)) {
        window.alert('Please enter your last name.');
        form.sf_last_nme.focus();
        return false;
    }
    else if ( isBlank(form.sf_email_addr.value)) {
        window.alert('Please enter your e-mail address.');
        form.sf_email_addr.focus();
        return false;
    }
    else if ( !checkEmailAddress(form.sf_email_addr.value) ) {
      form.sf_email_addr.value = "";
      window.alert("Please enter a valid email address.");
      form.sf_email_addr.focus();
      return false;
	}	
    else if (form.sf_email_addr.value != form.email_addr_confirm.value) {
      form.email_addr_confirm.value = "";
      window.alert("Please verify email address.");
      form.email_addr_confirm.focus();
      return false;
    }
    else if ( isBlank(form.sf_address1.value)) {
        window.alert('Please enter your street address.');
        form.sf_address1.focus();
        return false;
    }
    else if ( isBlank(form.sf_postal_cd.value)) {
        window.alert('Please enter your ZIP code.');
        form.sf_postal_cd.focus();
        return false;
    }
	else if(!validateZIP(form.sf_postal_cd.value)){
		form.sf_postal_cd.value="";
        form.sf_postal_cd.focus();
		return false;
	}
    else if(form.sf_birth_month.value == "none"){
      alert("Please select a Birth Month.");
      form.sf_birth_month.focus();
      return false;
    }
    else if(form.sf_birth_year.value == "none"){
      alert("Please select a Birth Year.");
      form.sf_birth_year.focus();
      return false;
    }
    else if(under21(form)){
      setAgeCookie();
      window.location = form.underageURL.value;
      return false;
    }
    return true;
}

function isBlank(s) {
    for( var i=0;i<s.length;i++ ) {
        var c = s.charAt(i);
        if( (c != ' ') && (c != '\n') && (c != '\t') )
            return false;
        }
        return true;
    }
	
  // Will determine if a user is under 21
  function under21(form) {
  var now = new Date();
  var thisMonth = now.getMonth() + 1;
  var thisDay = now.getDate();
  var thisYear = now.getFullYear();
  var birthMonth = form.sf_birth_month.value;
  var birthYear = form.sf_birth_year.value;
  var user_age = thisYear - birthYear;
  var minimum_year = 21;

  if (user_age < minimum_year) {
    return true;
  }

  if (user_age > minimum_year) {
    return false;
  }

  if (thisMonth <= birthMonth) {
    return true;
  }

  if (thisMonth > birthMonth) {
    return false;
  }
  return false;
}

function checkEmailAddress( emailStr ) {
    var emailPat=/^(.+)@(.+)$/
    var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
    var validChars="\[^\\s" + specialChars + "\]"
    var quotedUser="(\"[^\"]*\")"
    var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
    var atom=validChars + '+'
    var word="(" + atom + "|" + quotedUser + ")"
    var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
    var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
    var matchArray=emailStr.match(emailPat)
    if (matchArray==null) {
        return false
    }
    var user=matchArray[1]
    var domain=matchArray[2]
    if (user.match(userPat)==null) {
        return false
    }
    var IPArray=domain.match(ipDomainPat)
    if (IPArray!=null) {
        for (var i=1;i<=4;i++) {
            if (IPArray[i]>255) {
                return false
            }
        }
        return true
    }
    var domainArray=domain.match(domainPat)
    if (domainArray==null) {
        return false
    }
    var atomPat=new RegExp(atom,"g")
    var domArr=domain.match(atomPat)
    var len=domArr.length
    if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) {
        return false
    }
    // Make sure there's a host name preceding the domain.
    if (len<2) {
        return false
    }
    return true;
}

  function setAgeCookie() {
    today = new Date();
    tomorrow = new Date();
    tomorrow.setTime(today.getTime()+(60*60*24*1000));
    document.cookie='EmailAge=true; path=/; expires=' + tomorrow.toGMTString();
  }

  function checkAgeCookie() {
    underage = document.cookie;
    if (underage.indexOf('EmailAge') > -1) {
      // Matt Bennett - I added this check to prevent the under 18 page from getting in a loop.
      if (window.location.search != "/app/IrishSpring/US/EN/Bodywash/GetIrishNow/Microsite/Shenanigans/Vegas-Sweeps/Under-21.cvsp") { 
        window.location = "/app/IrishSpring/US/EN/Bodywash/GetIrishNow/Microsite/Shenanigans/Vegas-Sweeps/Under-21.cvsp"; 
      }
    }

  checkAgeCookie();
}

function validateZIP(field) {
	var valid = "0123456789-";
	var hyphencount = 0;

	if (field.length!=5 && field.length!=10) {
		alert("Please enter your 5 digit or 5 digit+4 zip code.");
		return false;
	}
	for (var i=0; i < field.length; i++) {
		temp = "" + field.substring(i, i+1);
		if (temp == "-") hyphencount++;
		if (valid.indexOf(temp) == "-1") {
			alert("Invalid characters in your zip code.  Please try again.");
			return false;
		}
		if ((hyphencount > 1) || ((field.length==10) && ""+field.charAt(5)!="-")) {
			alert("The hyphen character should be used with a properly formatted 5 digit+four zip code, like '12345-6789'.   Please try again.");
			return false;
	    }
	}
	return true;
}