<!--
function validateEmail(Email)
{
	// Check that email address is not empty
	if (Email == "")
	{
		alert("Please enter a valid email address.");
		return false;
	} else {
		if (Email.length > 0)
		{
			// Validate the structure of the email address
			var i   = Email.indexOf("@");
			var j   = Email.indexOf(".",i);
			var k   = Email.indexOf(",");
			var kk  = Email.indexOf(" ");
			var jj  = Email.lastIndexOf(".") + 1;
			var len = Email.length;
			if ((i < 1) || (j < (i + 1)) || (k > -1) || (kk > -1) || (len - jj < 2) || (len - jj > 4))
			{
				alert(Email + "\nis not a valid email address.");
				return false;
			}
		}
	}
	
	return true;
}
// -->