function validateTT( )
{
valid = true;	 
	if ( document.timetable.Name.value == "") {
alert ( "Please enter your Name" );
valid = false;
}
if ( document.timetable.Email.value == "") {
alert ( "Please enter your Email Address" );
valid = false;
}
			if ( document.timetable.pcode.value == "") {
alert ( "Please enter your Postcode" );
valid = false;
		}
				return valid;
}