function showCalendar() {

    dojo.require("dojo.dnd.move");
    dojo.require("dojox.layout.FloatingPane");

    require([
                'dojox/calendar/Calendar',
                'dojox/calendar/CalendarBase',
                'dojo/store/Memory',
                'dojo/store/Observable',
                'dojo/when',
                'dojo/parser',
                'dojo/domReady!'],


            function(Calendar, CalendarBase, Memory, Observable, when) {
                var divA = document.getElementById('rcg');
                divA.style.display = 'block';
                divA.style.visibility = 'visible';

                document.body.appendChild(divA);

                var ParentConstrainedFloatingPane = dojo.declare(dojox.layout.FloatingPane, {
                    postCreate: function () {
                        this.close = function () {
                            this.domNode.style.display = "none";
                            this.domNode.style.visibility = "hidden";
                        };
                        this.inherited(arguments);
                        this.moveable = new dojo.dnd.move.parentConstrainedMoveable(
                            this.domNode, {
                                handle: this.focusNode,
                                area: "content",
                                within: true
                            }
                        );
                    }
                });

                var BoxConstrainedFloatingPane = dojo.declare(dojox.layout.FloatingPane, {

                    postCreate: function() {
                        this.inherited(arguments);
                        this.moveable = new dojo.dnd.move.boxConstrainedMoveable(
                            this.domNode, {
                                handle: this.focusNode,
                                box: { l: 0, t: 0, w: 0, h: 0 },
                                within: false
                            }
                        );
                    }
                });

                var ConstrainedFloatingPane = dojo.declare(dojox.layout.FloatingPane, {
                    postCreate: function() {
                        this.inherited(arguments);
                        this.close = function () {
                            this.domNode.style.display = "none";
                            this.domNode.style.visibility = "hidden";
                        };
                        this.moveable = new dojo.dnd.move.constrainedMoveable(
                            this.domNode, {
                                handle: this.focusNode,

                                constraints: function() {
                                    var coordsBody = dojo.coords(dojo.body());
                                    // or
                                    var coordsWindow = {
                                        l: 0,
                                        t: 0,

                                        w: window.innerWidth,
                                        h: window.innerHeight
                                    };
                                    return coordsWindow;
                                },

                                within: true
                            }
                        );
                    }
                });


                var fpaner = new ParentConstrainedFloatingPane({
                    title: "Koledar",
                    resizable: true,
                    maxable: true,
                    dockable: true,
                    closable: true,
                    //constrainToContainer: true,
                    style: "position:absolute;top:110px;left:335px;width:700px;height:650px;"
                }, "rcg");

                var someData = [
                    {
                        id: 0,
                        summary: "Event 1",
                        startTime: new Date(2013, 5, 17, 10),
                        endTime: new Date(2013, 5, 17, 12),
                        calendar: "Calendar1"
                    },
                    {
                        id: 1,
                        summary: "Event 2",
                        startTime: new Date(2013, 5, 17, 14),
                        endTime: new Date(2013, 5, 17, 15),
                        calendar: "Calendar2"
                    }
                ];

                var someData2 = [
                    {
                        id: 30,
                        summary: "Event 3",
                        startTime: new Date(2013, 6, 29, 10),
                        endTime: new Date(2013, 6, 29, 12),
                        calendar: "Calendar1"
                    },
                    {
                        id: 40,
                        summary: "Event 4",
                        startTime: new Date(2013, 6, 27, 14),
                        endTime: new Date(2013, 6, 27, 15),
                        calendar: "Calendar2"
                    }
                ];

                var calendar = new Calendar({
                    date: new Date(2013, 5, 17),
                    dateInterval: "month",
                    columnViewProps: { minHours: 0, maxHours: 24 },
                    style: "position:relative;height:100%"
                });

                calendar.on("timeIntervalChange", function(e) {
                    var YYYY = e.startTime;
                    var MM = e.startTime.getMonth() + 1;
                    var DD = e.startTime.getDay();

                    var YYYYend = e.endTime.getFullYear();
                    var MMend = e.endTime.getMonth() + 1;
                    var DDend = e.startTime.getDay();

                    if (MM < 10)
                    { MM = '0' + MM };

                    if (MMend < 10)
                    { MMend = '0' + MMend };

                    if (MM == "06") {
                        calendar.set('store', new Observable(new Memory({ data: someData })));
                    }
                    else if (MM == "07") {
                        calendar.set('store', new Observable(new Memory({ data: someData2 })));
                    }
                });

                    calendar.placeAt(fpaner);
                    fpaner.startup();
                    fpaner.show();
            });
            }