function start_news(){
	$('div#news_div').animate( { scrollTop: '+=20px' }, 500 );
}
function stop_news(){
	$('div#news_div').stop();
	clearInterval(new_o);
}
function email_ajax(){
	if(check_email('email', true) == true){
		$.post( "./include/save_email.php", 
			{ email: $('#email').val() },
			function(data) {
				if(data == 'true'){
					alert('已成功訂閱。\nSubscribe Success.');
					$('#email').val('');
				} else if (data == 'exist') {
					alert('閣下已曾經訂閱。\nYour email is already subscribed.');
					$('#email').val('');
				} else {
					alert('訂閱發生問題，請再嘗試。\nError Occur, please try again.');
				}
		});
	}
}