New beta release of DayPilot Pro for JavaScript is available.
Release notes: http://javascript.daypilot.org/daypilot-pro-for-javascript-1-0-beta4/
<div id="dp"></div>
<script type="text/javascript">
    var dp = new DayPilot.Calendar("dp");
    // behavior and appearance
    dp.cssClassPrefix = "calendar_white";
    // view
    dp.startDate = new DayPilot.Date("2013-05-01");  // or just dp.startDate = "2013-03-25";
    dp.viewType = "Week";
    // no events at startup, we will load them later using loadEvents()
    dp.events.list = [];
    // drag and drop event moving
    dp.onEventMoved = function (args) {
        DayPilot.request(
            "backend_move.php", 
            function(req) { // success
                var response = eval("(" + req.responseText + ")");
                if (response && response.result) {
                    dp.message("Moved: " + response.message);
                }
            },
            args,
            function(req) {  // error
                dp.message("Saving failed");
            }
        );        
    };
    // event creating
    dp.onTimeRangeSelected = function (args) {
        var name = prompt("New event name:", "Event");
        dp.clearSelection();
        if (!name) return;
        var e = new DayPilot.Event({
            start: args.start,
            end: args.end,
            id: DayPilot.guid(),
            resource: args.resource,
            text: name
        });
        dp.events.add(e);
        args.text = name;
        DayPilot.request(
            "backend_create.php", 
            function(req) { // success
                var response = eval("(" + req.responseText + ")");
                if (response && response.result) {
                    dp.message("Created: " + response.message);
                }
            },
            args,
            function(req) {  // error
                dp.message("Saving failed");
            }
        ); 
    };
    dp.init();
    loadEvents();
    function loadEvents() {
        DayPilot.request("backend_events.php", function(result) {
            var data = eval("(" + result.responseText + ")");
            for(var i = 0; i < data.length; i++) {
                var e = new DayPilot.Event(data[i]);                
                dp.events.add(e);
            }
        });
    }
</script>