var currentlyActive=0;
function getAreas(cityId,finalLocation){
    if(parseInt(cityId)<=0)return;
    currentlyActive=cityId;
    $.ajax({
        data:"do=get_areas&city_id="+parseInt(cityId),
        url:"index.php",
        type:"POST",
        success:function(msg){
            if(currentlyActive==cityId){
                $("#"+finalLocation).html(msg);
            }
        }        
    });
}