// JavaScript Document
function validation()
{
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
	if(document.getElementById('name').value=='')
	{
		alert('Please fill your name');
		document.getElementById('name').focus();
		return false
	}
	if(document.getElementById('email').value=='')
	{
		alert('Please enter the email address');
		document.getElementById('email').focus();
		return false;
	}
	if(!emailfilter.test(document.getElementById('email').value))
	{
		alert('Please Enter the Valid Email Address');
		document.getElementById('email').focus();
		return false;
	}
}
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 && strPhone.indexOf(")")==-1)return false
if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}
function validcontact()
{
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
	if(document.getElementById('firstname').value=='')
	{
		alert('Please enter the firstname');
		document.getElementById('firstname').focus();
		return false;
	}
	if(document.getElementById('lastname').value=='')
	{
		alert('Please enter the lastname');
		document.getElementById('lastname').focus();
		return false;
	}
	if(document.getElementById('phone').value=='')
	{
		alert('Please enter the phone');
		document.getElementById('phone').focus();
		return false;
	}
	if (checkInternationalPhone(document.getElementById('phone').value)==false){
		alert("Please enter a valid contact number..!");
		document.getElementById('phone').value="";
		document.getElementById('phone').focus();
		return false;
	}
	if(document.getElementById('email').value=='')
	{
		alert('Please enter the email');
		document.getElementById('email').focus();
		return false;
	}
	if(!emailfilter.test(document.getElementById('email').value))
	{
		alert('Please Enter the Valid Email Address');
		document.getElementById('email').focus();
		return false;
	}
}