/**
 * 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 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){
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function ValidatePhone1(){
var Phone1=document.getElementById("phone1");
document.getElementById("phone1Error").style.display = "none";
	if (checkInternationalPhone(Phone1.value)==false){
document.getElementById("phone1Error").style.display = "inline";
Phone1.select();
Phone1.focus();
return false;
	}
	return true;
 }

function ValidatePhone2(){
var Phone2=document.getElementById("phone2");
document.getElementById("phone2Error").style.display = "none";
	if (checkInternationalPhone(Phone2.value)==false){
document.getElementById("phone2Error").style.display = "inline";
Phone2.select();
Phone2.focus();
return false;
	}
	return true;
 }

function ValidateEmergency1(){
var Emergency1=document.getElementById("emergencyphone1");
document.getElementById("emergency1Error").style.display = "none";
	if (checkInternationalPhone(Emergency1.value)==false){
document.getElementById("emergency1Error").style.display = "inline";
Emergency1.select();
Emergency1.focus();
return false;
	}
	return true;
 }

function ValidateEmergency2(){
var Emergency2=document.getElementById("emergencyphone2");
document.getElementById("emergency2Error").style.display = "none";
	if (checkInternationalPhone(Emergency2.value)==false){
document.getElementById("emergency2Error").style.display = "inline";
Emergency2.select();
Emergency2.focus();
return false;
	}
	return true;
 }


function ValidateAllPhones(){
     ValidatePhone1();
     ValidatePhone2();
     ValidateEmergency1();
     ValidateEmergency2();
     if (ValidatePhone1()==false || ValidatePhone2()==false || ValidateEmergency1()==false || ValidateEmergency2()==false){
    return false;
    }
    return true;
}