Jquery UI Datepicker not displaying

Question

UPDATE
I have reverted back to Jquery 1.3.2 and everything is working, not sure what the problem is/was as I have not changed anything else apart of the jquery and ui library versions.
UPDATE END

I having an issue with the JQuery UI datepicker. The datepicker is being attached to a class and that part is working but the datepicker is not being displayed.

Here is the datepicker code I am using and the inline style that is being generated when I click in the input box that has the class ".datepicker".

$('.datepicker').datepicker({dateFormat:'dd/mm/yy'});

display:none;
left:418px;
position:absolute;
top:296px;
z-index:1;

If I change the display:none to display:block the datepicker works fine except it dosen't close when I select a date.

Jquery libraries in use:

• jQuery JavaScript Library v1.4.2
• jQuery UI 1.8 jQuery UI Widget 1.8
• jQuery UI Mouse 1.8 jQuery UI
• Position 1.8 jQuery UI Draggable 1.8
• jQuery UI Droppable 1.8 jQuery UI
• Datepicker 1.8

Answer 1

This is a slightly different problem. With me the date picker would display but the css was not loading.

I fixed it by: Reload the theme (go to jquery ui css, line 43 and copy the url there to edit your themeroller theme) > Resave without the advanced options > Replace old files > Try not to change the urls and see if that helps as well.