On pageshow i trying to disable a button but then i got a javascript error says "this.button is undefined", you find a test page that shows only one button and script that trying to disable the button on pageshow.

I have tried on pageinit but then i getting only "loader" image and no button and the same error.

My test page:  http://test.rickardp.se/jqm/button_test.html

Some ideas?