Weird bug when combining an ASP.NET updatepanel with the jQuery UI DatePicker

Question

I\'ve created a page which combines an inline jQuery UI datepicker . I wan\'t to initiate a callback to the updatepanel when the user clicks a new date to update some data. Now,

Answer 1

However, if I step through the code in FireBug slow enough it works

Oh? Why not give it a second to work it out?

setTimeout(function(){alert(sender._postBackSettings.panelID);},1000);