// JavaScript Document
function IsEmpty(sStr) {
	return (sStr.length < 1);
}
function IsValidEmail(sEmail)
{
	var sStr = new String(sEmail);
	var index1 = sStr.indexOf("@");
	if (index1 > 0)
	{
		var index2 = sStr.lastIndexOf(".");
		return ((index2 > index1 + 1) && (sStr.length > index2 + 1));
	}
	return false;
}
function ValidateForm()
{
	if (IsEmpty(document.subscribeform.email.value))
	{
		alert("No email address has been provided. Please enter an email address before subscribing to the newsletter.");
		return false;
	}
	if (!IsValidEmail(document.subscribeform.email.value))
	{
		alert("The email address provided is not valid. Please enter a valid email address before subscribing to the newsletter.");
		return false;
	}
	
	return true;
}