$("#myUpdatePanel").on("update", myFunc);

$.updatePanel.on("update", myRunOnceFunc);

// wrap updatePanel reload functionality
$.updatePanel = (function () {
    var prm;

    var UpdatePanel = function () { };
    UpdatePanel.prototype = { };

    // initialize on $(document).ready()
    $(function () {
        prm = Sys.WebForms.PageRequestManager.getInstance();
        if (prm) {
            prm.add_pageLoaded(function (s, e) {
                $.each(e.get_panelsUpdated(), function () {
                    // "this" is the asp:UpdatePanel's div
                    updateControls.call(this);

                    // call panel-specific update event handlers
                    $(this).trigger($.Event("update"));
                });
            });

            // triggered once no matter how many panels were updated
            $(UpdatePanel).trigger($.Event("update"));
        }
    });

    return $(UpdatePanel);
})();

$(function() { $.updatePanel.on("update", myRunOnceFunc); });