// JavaScript Document
function checkValid()
{
	var msgError = '';
	var errDivIds = new Array('errDivCaptcha');		
	clearAllMessages(errDivIds);	

	if(trim(document.frmRegistration.firstName.value)=="")
	{
		alert("Enter first name");
		document.frmRegistration.firstName.focus();
		return false;
	}

	if(trim(document.frmRegistration.lastName.value)=="")
	{
		alert("Enter last name");
		document.frmRegistration.lastName.focus();
		return false;
	}
	if(trim(document.frmRegistration.address1.value)=="")
	{
		alert("Enter address1");
		document.frmRegistration.address1.focus();
		return false;
	}
/*
	if(trim(document.frmRegistration.address2.value)=="")
	{
		alert("Enter address2");
		document.frmRegistration.address2.focus();
		return false;
	}

	if(trim(document.frmRegistration.address3.value)=="")
	{
		alert("Enter address3");
		document.frmRegistration.address3.focus();
		return false;
	}*/

	if(trim(document.frmRegistration.emailId.value)=="")
	{
		alert("Enter email address");
		document.frmRegistration.emailId.focus();
		return false;
	}

	if(chkEmail(document.frmRegistration.emailId.value)==false)
	{
		document.frmRegistration.emailId.focus();
		return false;
	}
	
	if(trim(document.frmRegistration.phone.value)=="")
	{
		alert("Enter telephone number");
		document.frmRegistration.phone.focus();
		return false;
	}

	if(checkPhone()==false)
		return false;
		
	if(trim(document.frmRegistration.prodIntrest.value)=="")
	{
		alert("Enter product of intrest");
		document.frmRegistration.prodIntrest.focus();
		return false;
	}
	
	if (recaptcha_response_field == '' )
	{
		msgError = "Please enter security code";
		writeErrorMessage('errDivCaptcha',msgError);
		//document.getElementById("recaptcha_response_field").focus();
	}

	if(msgError == '')
	{
		return true;
	}
  	else
	{
  	    return false;
	}
}

function clearAllMessages(arrDivIds)
{  	
	var obj;
	var len = arrDivIds.length;
	for(var i=0;i<len;i++){		
		obj = document.getElementById(arrDivIds[i]);
		if(obj!=null){			
			obj.innerHTML = '';
			obj.style.display = 'none';			
		}	
	}
}

function writeErrorMessage(divId,msgError)
{
	objErrDisp = document.getElementById(divId);
	objErrDisp.innerHTML = msgError;
	objErrDisp.style.display = '';
}


function trim(stringToTrim)
{
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}


// 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){
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 checkPhone(){
	var Phone=document.frmRegistration.phone;
	
	if ((Phone.value==null)||(Phone.value=="")){
		alert("Please Enter your Phone Number")
		Phone.focus()
		return false
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number")
		Phone.focus()
		return false
	}
	return true
 }

function chkEmail(email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = email;
   if(reg.test(address) == false) {
      alert('Invalid Email Address');
      return false;
   }
}