function getAreaList(obj) {
	var id = obj.value;
	
	if (id == 2 || id == 4) {
    	new Ajax.Updater(
	    	'toAreaField',
    		'/en/tops/getarea/'+ id ,
    		{ method: 'post'}
    	);
    } else { 
    	new Ajax.Updater(
		    'fromAreaField',
    		'/en/tops/getarea/'+ id ,
    		{ method: 'post'}
    	);
    }
}

function getBusStopListTo(obj) {

var areaId = obj.value;
var lineId = Form.serialize($('toForm')).toQueryParams()['data[BusStopTo][lineId]'];
	new Ajax.Updater(
    	'toBusStopField',
		'/en/tops/getBusStopList/' + lineId + '/' + areaId ,
		{ method: 'post'}
   	);

}

function getBusStopListFrom(obj) {
var areaId = obj.value;
var lineId = Form.serialize($('fromForm')).toQueryParams()['data[BusStopFrom][lineId]'];
	new Ajax.Updater(
    	'fromBusStopField',
		'/en/tops/getBusStopList/'+ lineId + '/' + areaId ,
		{ method: 'post'}
   	);

}