jQuery(document).ready(function($){
    var pickeddate;
    var pdate = new Date();
    var pday = pdate.getDay();

    jQuery("#timepicker").timepicker({
        timeFormat: "HH:mm",
        startTime: openinghours[pday].start,
        minTime: openinghours[pday].start,
        maxTime: openinghours[pday].stop,
        interval: 15 // 15 minutes
    });

    var $calendar = $('#calendar_date');

    $('#calendar_date').change(function(){
        pickeddate = $calendar.val().split(".");
        pdate = new Date(pickeddate[2], pickeddate[1] - 1, pickeddate[0]);
        pday = pdate.getDay();

        if(pickeddate != ""){
            jQuery("#timepicker").data("TimePicker").options.startTime = openinghours[pday].start;
            jQuery("#timepicker").data("TimePicker").options.minTime = openinghours[pday].start;
            jQuery("#timepicker").data("TimePicker").options.maxTime = openinghours[pday].stop;
            jQuery("#timepicker").data("TimePicker").items = null;
            jQuery("#timepicker").data("TimePicker").widget.instance = null;
        }
    });

});