Draggable wont work in IE9

[GoogleCodeExporter]

What steps will reproduce the problem?
1. use IE9 and open demo 
http://gwtquery-ui.googlecode.com/svn/demos/GwtQueryUi.html#
2. click Draggables -> Default Functionality
3. try dragging object

What is the expected output? What do you see instead?
Object should be moving/dragged. It is still and no action.

What version of the product are you using? On what operating system?
http://gwtquery-ui.googlecode.com/svn/demos/GwtQueryUi.html

Please provide any additional information below.

Original issue reported on code.google.com by noxi...@gmail.com on 30 Jul 2011 at 6:03