function getEventId(){
        upcoming_event = $('.upcoming_event dl');
        if(upcoming_event.length > 0){
            id = upcoming_event.attr('id').substring(1,2);
            return id;
        }else{
            return false;
        }
  }

if(getEventId()){
    $('#agenda_overview').load(ABS_URI+'agenda/top_three/today/'+getEventId()+'/');
}else{
    $('#agenda_overview').load(ABS_URI+'agenda/top_three/today/');
}

$('#calendar_container').datepicker({
    prevText: '<<',
    nextText: '>>',
    dateFormat: 'dd-mm-yy', 
    monthNames: ['januari','februari','maart','april','mei','juni','juli','augustus','september','oktober','november','december'],
    dayNamesMin: ['z', 'm', 'd', 'w', 'd', 'v', 'z'],
    onSelect: function(dateText) {
        if(getEventId()){
            $('#agenda_overview').load(ABS_URI+'agenda/top_three/'+dateText+'/'+getEventId()+'/');
        }else{
            $('#agenda_overview').load(ABS_URI+'agenda/top_three/'+dateText+'/');
        }

    }
});

/* mark days on wich an event take place */
//function markEvents(events){
//    td          = $('.ui-datepicker-calendar tbody td');
//    daysCall    = new Array();
//    
//        $.each(events, function(key, obj){
            //console.log(obj);
//            
//        });
            //console.log($('#calendar_container'));
//}

//markEvents(json_events);