Is there a way using Jquery to detect the back button being pressed cross browsers

jQuery Address provides strong cross-browser support for browser history and Ajax crawling:

http://www.asual.com/jquery/address

http://github.com/asual/jquery-address

Greetings

UPDATE:

you can find a good sample right here:

http://jsfiddle.net/5L6Ur/10/

some code in short:

 $(function() {
    $('a').click(function(e) {
        e.preventDefault();
        $.address.value($(this).attr('href'));
    });
    var changecount = 0;
    $.address.change(function(e) {
        if (typeof e !== 'function') {
            $('span').html(changecount++);
        }
    });
 });​

You should:

1. Set location.hash when page state changes.
2. When location.hash changed by user (for example, by pressing back button) render appropriate page contents.