// BEGIN SCRIPT
//
// CHECK FOR REQUIRED FIELDS
//
function ValidateRequired()
{
	var name=document.sustainabilityFeedback.name.value;
	var comment=document.sustainabilityFeedback.comment.value;
	var eValid = '';
	var pValid = '';
	if (name == null || name == '') {
		alert("Please Tell Us Your Name");
		document.sustainabilityFeedback.name.focus();
		return false;
	}
	if (comment == null || comment == '') {
		alert("Please Leave Us Your Comment(s)");
		document.sustainabilityFeedback.comment.focus();
		return false;
	}
	else {
			if (ValidateFormPhone()==true) {
				if(ValidateFormEmail()==true) {
					return true;
				}
				else {
					return false;
				}
			}
			else {
				return false;
			}
	}
}

 // BEGIN EMAIL VALIDATION
 //

function ValidateFormEmail() {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.sustainabilityFeedback.email.value;
   if (address == null || address == '') {
	   return true;
   }
   else if(reg.test(address) == false) {
      alert('Please Enter a Valid Email Address\neg. info@averydennison.com');
	  document.sustainabilityFeedback.email.value = '';
	  document.sustainabilityFeedback.email.focus();
      return false;
   }
   else {
	   return true;
   }
}
 
 //
 // END EMAIL VALIDATION

// THIS PORTION OF SCRIPT IS FOR PHONE # VALIDATION
//
// 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);
}

function ValidateFormPhone(){
	var Phone=document.sustainabilityFeedback.phone
	if ((Phone.value==null)||(Phone.value=="")){
		//alert("Please Enter your Phone Number")
		//Phone.focus()
		return true;
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number\neg. 123-456-7890");
		Phone.value="";
		Phone.focus();
		return false;
	}
	else {
		return true;
	}
 }
 // 
 // END PHONE # VALIDATION