function ServiceManager() {
    this.serviceUrl = null;
    this.data = null;
    this.getControl = function(divResult, successEvent) {
        $.ajax({
            type: "POST",
            url: this.serviceUrl,
            data: this.data,
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function(msg) {
                if (msg)
                    $("#" + divResult).append(msg.d);
                if ($.isFunction(successEvent))
                    successEvent();
            }
        });
    }
}