function numeralsOnly(evt) {
    evt = (evt) ? evt : event;
	var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode :
	    ((evt.which) ? evt.which : 0));
	if (charCode > 31 && (charCode < 48 || charCode > 57)) {
	    alert("You may only enter numerals in this field.");
		return false;
	}
	return true;
}

// MOS Sweepstakes Validation JavaScript Document

  function checkFields(form) {

    var time=new Date();
    var year=time.getYear();

	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) ) {
      alert("Please enter your first name.");
      form.sf_first_nme.focus();
      return false;
    }

    else if ( isBlank(form.sf_last_nme.value)) {
      alert("Please enter your last name.");
      form.sf_last_nme.focus();
      return false;
    }
	
    else if ( isBlank(form.sf_address1.value) ) {
      alert("Please enter your street address.");
      form.sf_address1.focus();
      return false;
    }
	
    else if ( isBlank(form.sf_city.value) ) {
      alert("Please enter your city.");
      form.sf_city.focus();
      return false;
    }
	
    else if(form.sf_state_cd.value == "none"){
      alert("Please select a State.");
      form.sf_state_cd.focus();
      return false;
    }

    else if ( isBlank(form.sf_postal_cd.value) ) {
      alert("Please enter your zip code.");
      form.sf_postal_cd.focus();
      return false;
    }

    else if ( !checkEmailAddress(form.sf_email_addr.value) ) {
      form.sf_email_addr.value = "";
      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 = "";
      alert("Please verify email address.");
      form.email_addr_confirm.focus();
      return false;
    }

    else if(form.sf_birth_day.value == "none"){
      alert("Please select a Birth Day.");
      form.sf_birth_day.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(!form.sf_rules.checked) {
		alert("You must agree to the Official Rules and Privacy Policy");
		form.sf_rules.focus();
		return false;
	}

    else if(under18(form)){
      setAgeCookie();
      window.location = form.underageURL.value;
      return false;
    }
	
	entry_limit.set();
  }

  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 18
function under18(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 birthDay = form.sf_birth_day.value;
    var birthYear = form.sf_birth_year.value;
    var user_age = thisYear - birthYear;
    var minimum_year = 18;
    var sameMonth = 0;
    var sameDay = 0;

    if (user_age < minimum_year) {
        return true;
    }

    if (user_age >= minimum_year) {
        return false;
    }

    if (thisMonth < birthMonth) {
        return true;
    }

    if (thisMonth > birthMonth) {
        return false;
    }

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

    if ((birthMonth == thisMonth) && (thisDay >= birthDay)) {
        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) {
      if (window.location.search != "/MurphyOilSoap/promotions/your-year-to-shine-sweepstakes/under-18") { 
        window.location = "/MurphyOilSoap/promotions/your-year-to-shine-sweepstakes/under-18"; 
      }
    }

  checkAgeCookie();
}

$(function(){
	entry_limit.init();
});

var entry_limit = {
	init: function() {
		this.check();
	},
	check: function() {
		if(window.location.href.indexOf("confirmation") == -1)
			if(readCookie("mos_entry") != undefined || readCookie("mos_entry") != null) {
				alert("You can only enter the sweepstakes once per day.");
				$("form[name='dataForm']").hide();
			}
	},
	set: function() {
		createCookie("mos_entry", "true", 1);
	}
};


// http://www.quirksmode.org/js/cookies.html, tweaked
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		//date.setTime(date.getTime()+(days*24*60*60*1000));
		//var expires = "; expires="+date.toGMTString();

		date.setDate(date.getDate() + 1); 

		var year = date.getFullYear();
		var month = date.getMonth();
		var day = date.getDate();
		var tomorrow = new Date(year, month, day, 00, 00, 01);

		var expires = "; expires=" + tomorrow.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

// http://www.quirksmode.org/js/cookies.html
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

// http://www.quirksmode.org/js/cookies.html
function eraseCookie(name) {
	createCookie(name,"",-1);
}