var numberclick=0;
function validatePhoneNumber(id)
{
	var number = document.getElementById(id).value;
	number = number.replace(/^\s+|\s+$/g, '');

	if(0 == number.length)
	{
		alert("Type the phone number.");
		return false;
	}
	
	
	var regExp = /^(\d{10})|(((\(\d{3}\)\s*)|(\d{3}-))\d{3}-\d{4})$/;
	if(!regExp.test(number))
	{
		alert("Invalid phone number format.\r\nSupported formats are: (xxx)xxx-xxxx or xxx-xxx-xxxx.");
		return false;
	}
	return true;
	
}

function showdiv() {	
	if(document.getElementById('CommentCheck').checked == true ) {
		document.getElementById('box_email').style.display="block";
	}
	else {
		document.getElementById('box_email').style.display="none";
	}
}