// JavaScript Document
  
  //email address regex
  var filterEmail = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
  
  //US and Canadian postal codes
  var filterPostal = /(^\d{5}$)|(^\d{5}-\d{4}$)|^[ABCEGHJKLMNPRSTVXYabceghjklmnprstvxy]{1}\d{1}[A-Za-z]{1} *\d{1}[A-Za-z]{1}\d{1}$/;

function checkvars() {
 
  if (document.signup.FNAME.value == "" ||  
    document.signup.FNAME.value == null)  {
    alert("Please include a First Name.");
    document.signup.FNAME.focus();
    return false;
    }
  
  if (document.signup.LNAME.value == "" ||  
    document.signup.LNAME.value == null)  {
    alert("Please include a Last Name.");
    document.signup.LNAME.focus();
    return false;
    }
	
  if (!filterEmail.test(document.signup.EMAIL.value)){
	alert("Please enter a valid Email Address.");
    document.signup.EMAIL.focus();
    return false;
	}

  if ((document.signup.PHONE.value==null)||(document.signup.PHONE.value=="")){
	  alert("Please enter your Phone number")
	  document.signup.PHONE.focus()
	  return false;
	}

 if (checkInternationalPhone(document.signup.PHONE.value)==false){
		alert("Please enter a valid Phone number")
		document.signup.PHONE.value=""
		document.signup.PHONE.focus()
		return false
	}

  if (document.signup.ADDRESS1.value == "" ||  
    document.signup.ADDRESS1.value == null)  {
    alert("Please include your street Address.");
    document.signup.ADDRESS1.focus();
    return false;
    }

  if (document.signup.CITY.value == "" ||  
    document.signup.CITY.value == null)  {
    alert("Please include your City.");
    document.signup.CITY.focus();
    return false;
    }

  if (document.signup.STATE.value.indexOf("-") != "-1")  {
    alert("Please select a State/Province.");
    document.signup.STATE.focus();
    return false;
    }
  
  if (!filterPostal.test(document.signup.ZIPCODE.value)){
	alert("Please enter a valid Postal Code.");
    document.signup.ZIPCODE.focus();
    return false;
	}
  
  checkVal = -1;
  for (i=document.signup.CUSTTYPE.length-1; i > -1; i--) {
    if (document.signup.CUSTTYPE[i].checked) {
      checkVal = 1;
    }
  }
  if (checkVal == -1)  {
    alert("Please select a customer type from the four choices provided.");
    document.signup.CUSTTYPE[0].focus();
	return false;
  }
  
  checkLead = -1;
  for (i=document.signup.PHONEME.length-1; i > -1; i--) {
    if (document.signup.PHONEME[i].checked) {
      checkLead = 1;
    }
  }
  if (checkLead == -1)  {
    alert("Would you like to be contacted about your deck design?");
    document.signup.PHONEME[0].focus();
	return false;
  }
    
  return true;
}

/**
 * DHTML phone number validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

function isInteger(s) {
	var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}
function trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}
function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
var bracket=3
strPhone=trim(strPhone)
if(strPhone.indexOf("+")>1) return false
if(strPhone.indexOf("-")!=-1)bracket=bracket+1
if(strPhone.indexOf("(")!=-1 && strPhone.indexOf("(")>bracket)return false
var brchr=strPhone.indexOf("(")
if(strPhone.indexOf("(")!=-1 && strPhone.charAt(brchr+2)!=")")return false
if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}