function isValidEmail(checkStr)
{
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9])+$/;
	var EmailValid = filter.test(checkStr);
	return (EmailValid);
}

function isValidPhone(hphone)
{
	var filter = /^[^a-zA-Z]*$/;
	var phoneValid = filter.test(hphone);
	return phoneValid;
}

function cihnito()
{
	_fname = document.getElementById("first_name");
	_lname = document.getElementById("last_name");
	_hphone = document.getElementById("home_phone");
	_email = document.getElementById("email");

	if ( _fname.value == "" )
	{
		alert("Please enter first name.");
		_fname.focus();
		return false;
	}

	if ( _lname.value == "" )
	{
		alert("Please enter your last name.");
		_lname.focus();
		return false;
	}

	if ( _hphone.value == "" || !isValidPhone(_hphone.value) )
	{
		alert("Please enter valid phone number.");
		_hphone.focus();
		return false;
	}

	if ( !isValidEmail(_email.value) )
	{
		alert("Please enter valid email address.");
		_email.focus();
		return false;
	}

return true;
}