Jquery Mobile Sticky Footer - css

Question

I want a footer in Jquery Mobile, that is not fixed, but is always at the bottom of the page.
Like this: http://ryanfait.com/sticky-footer/ (but in JQuery Mobile), not like like the standard JQuery Mobile Fixed footers.
So the footer should appear at the end of the content, or the bottom of the screen, whichever is lower.
Any ideas on how to approach this?
Edit:
The basic problem, is that I seem unable to get the div with data-role=content to actually take up the full height of the screen.

Answer 1

I solved this using mostly CSS. The advantages of this over the accepted answer is it will handle cases where the page size changes after the page is shown (such as browser resize, orientation change, or even more simple cases like collapsible/accordian sections). It also has much less Javascript code, and no layout math.
CSS:
html, body {
margin: 0;
padding: 0;
height: 100%;
}
[data-role=page] {
min-height: 100%;
position: relative;
}
[data-role=content] {
padding-bottom: 40px; /* based on how tall your footer is and how much gap you want */
}
[data-role=footer] {
position: absolute;
bottom: 0;
width: 100%;
height: 40px /* this can be configurable, or omitted, as long as the above padding-bottom is at least as much as the height of the footer is */
}
The absolute footer caused jQuery Mobile page transitions to show a flickering footer (particularly the "slide" transitions), so I added this small amount of Javascript:
$(document).live( 'pagebeforechange', function() {
// hide footer
$('[data-role=footer]').hide();
});
$(document).live( 'pagechange', function() {
// show footer
$('[data-role=footer]').show();
});

Answer 2

Basically you just need to check the height of each data-role="content" elements to make sure that with the header/footer/content-area that the vertical space in the view-port is used.
For example:
$(document).on("pageshow", ".ui-page", function () {
var $page = $(this),
vSpace = $page.children('.ui-header').outerHeight() + $page.children('.ui-footer').outerHeight() + $page.children('.ui-content').height();
if (vSpace < $(window).height()) {
var vDiff = $(window).height() - $page.children('.ui-header').outerHeight() - $page.children('.ui-footer').outerHeight() - 30;//minus thirty for margin
$page.children('.ui-content').height(vDiff);
}
});​
This code will run each time a page is navigated-to.
Here is a demo: http://jsfiddle.net/aBVtJ/1/

Answer 3

Check out this SO:
jQuery Mobile has a native footer that supports a fixed, or 'sticky', position. An example and documentation can be found at http://view.jquerymobile.com/1.3.1/dist/demos/widgets/fixed-toolbars/