I disable the button like this on my jQuery Mobile webpage:

```
$(document).ready(function() {
    $("#deliveryNext").button();
    $("#deliveryNext").button('disable');
});

```

and i can enable it with

```
$("#deliveryNext").button('enable');

```

But how do i check if the button is disabled or enabled? 

This command gives "undefined":

```
$("#deliveryNext").attr('disabled')

```

Some ideas?

Edit: i find out that $("#deliveryNext").button('disable') only seams to change the style on the button, the clicking works fine after so i need to disable the button some how also.. i tried .attr('disabled', 'disabled') but when i then test .attr('disabled') i get undefined... 

Edit2: more about my "real" problem at [How to disable a link button in jQuery Mobile?](https://stackoverflow.com/questions/6438659/how-to-disable-a-link-button-in-jquery-mobile)