Modal plugin of Bootstrap 2 is not displayed by the center

Question

I use bootstrap modal plugin. But modal dialog is not shown in center. Why? my mistake?

http://dl.dropbox.com/u/573972/stackoverflow/bootstrap/modal.html

Answer 1

I found this workarround to fix this issue:

$('#YourModal').modal().css(
            {
                'margin-top': function () {
                    return -($(this).height() / 2);
                }
            })

Source: https://github.com/twitter/bootstrap/issues/374