function ValidMe(user_language) {
	
	if (user_language == 'eng') {
		var err_arrival = 'Please select the arrival date.';
		var err_departure = 'Please select the departure date.';
		var err_nights = 'Please number of nights to stay.';
		var err_date_range = 'Invalid date range.';
		var err_adults = 'Please number of adults staying.';
		var err_rooms = 'Please enter the number of rooms.';
	} else if (user_language == 'chi') {
		var err_arrival = '请选择抵达日期';
		var err_departure = '请选择离开日期';
		var err_nights = '请选择入住天数';
		var err_date_range = '请更改您的离开日期';
		var err_adults = '请选择成人数目';
		var err_rooms = '请选择房间数目';
	} else if (user_language == 'jap') {
		var err_arrival = '到着日を選択してください。';
		var err_departure = '出発日を選択してください。';
		var err_nights = '滞在泊数を入力してください。';
		var err_date_range = '日にちが無効です。';
		var err_adults = '滞在する成人の人数を入力してください。';
		var err_rooms = '客室数を入力してください。';
	}
	
    if (document.booking_form.arrival_date.value=="") {
 	    	alert(err_arrival);
 	    	document.booking_form.arrival_date.focus();
 	    	return false;
    } else if (document.booking_form.depart_date.value=="") {
 	    	alert(err_departure);
 	    	document.booking_form.depart_date.focus();
 	    	return false;
 	} else if (document.booking_form.nights_num.value=="") {
 	    	alert(err_nights);
 	    	document.booking_form.nights_num.focus();
 			return false;
 	} else if (document.booking_form.nights_num.value=="N/A") {
 	    	alert(err_date_range);
 	    	document.booking_form.nights_num.focus();
 			return false;
 	} else if (document.booking_form.adults_num.value=="") {
 	    	alert(err_adults);
 	    	document.booking_form.adults_num.focus();
 			return false;
 	} else if (document.booking_form.room_num.value=="") {
 	    	alert(err_rooms);
 	    	document.booking_form.room_num.focus();
 			return false; 	
 	} else {
		document.booking_form.submit();
 		return true;
 	}   
}