Po kolei:

[HTML] pobierz, plaintext 
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
    <script src="@Url.Content("~/Scripts/jquery.blockUI.js")"></script>
    <script src="@Url.Content("~/Content/js/rx.common.2.js")"></script>
[HTML] pobierz, plaintext 

Wszytskie skrypty includuja sie poprawnie.

Dalej:

[PHP] pobierz, plaintext 
<script type="text/javascript">
        $(document).ready(function () {
            $.ajaxStart(
            $.blockUI({
                message: '<span class="loader green" original-title="Loading, please wait…"></span><h3> Please wait...</h3>'
            })
          );
            $.ajaxStop($.unblockUI);
 
        });
 
    </script>
[PHP] pobierz, plaintext 

Wyskakuje "lightbox"

[HTML] pobierz, plaintext 
<div id="ui-datepicker-div" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>
<div class="blockUI" style="display: none;"></div>
<div class="blockUI blockOverlay" style="z-index: 1000; border: medium none; margin: 0px; padding: 0px; width: 100%; height: 100%; top: 0px; left: 0px; background-color: rgb(0, 0, 0); opacity: 0.6; cursor: wait; position: fixed;"></div>
[HTML] pobierz, plaintext 

ale... AJAX sie wykonuje, a ekran dalej czarny + w konsoli mam:

[HTML] pobierz, plaintext 
$.ajaxStart is not a function
[HTML] pobierz, plaintext 

O co chodzi?

http://api.jquery.com/ajaxStart/#comment-61464202