var DatePicked = function() {
		var departure = $("#date_from");
        var arrival = $("#date_to");
        var nights = $("#nights");
        
        var triggeringElement = $(this);

                var departureDate = departure.datepicker("getDate");

                var minArrivalDate = new Date();
                if (departureDate != null) {
                        minArrivalDate.setDate(departureDate.getDate() + 1);
                } else {
                        minArrivalDate.setDate(minArrivalDate.getDate() + 1);
                }
                arrival.datepicker('option', 'minDate', minArrivalDate);

                var arrivalDate = arrival.datepicker("getDate");

                if (departureDate != null && arrivalDate != null && triggeringElement.attr("id") != "nights") {
                        var oneDay = 1000*60*60*24;
                        var difference = Math.ceil((arrivalDate.getTime() - departureDate.getTime()) / oneDay);
                        nights.val(difference);
                } else if (departureDate != null && triggeringElement.attr("id") == "nights") {
                        var nightsEntered = parseInt(nights.val());
                        if (nightsEntered >= 1) {
                                var newArrivalDate = new Date();
                                newArrivalDate.setDate(departureDate.getDate() + nightsEntered);
                                arrival.datepicker("setDate", newArrivalDate);
                        } else {
                                alert("Proszę podać liczbę.\nPlease input a number.\nBitte geben Sie die Anzahl der.");
                        }
                }
	}
	$(function(){
		
   		$('#gallery a').lightBox();
   		 $(".datepickerImage").click(function() {
      	 	$(".datepicker").show(); 
   		 });
   		 $("#date_from, #date_to").datepicker({
                        onSelect: DatePicked,
                        buttonImage: 'media/frontend/images/calendar.gif',
				        buttonImageOnly: true,
				        showOn: 'both',
				        dateFormat: 'dd.mm.yy',
				        dayNamesMin: ['Ni', 'Po', 'Wt', 'Śr', 'Cz', 'Pt', 'So'],
				        monthNames: ['Styczeń','Luty','Marzec','Kwiecień','Maj','Czerwiec','Lipiec','Sierpien','Wrzesień','Październik','Listopad','Grudzień']
		                });
                $("#nights").change(DatePicked);
                DatePicked();
                
                
                



                
                
	});