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

Did you try:

$( "#login" ).dialog({
    modal: true
});

Ref: http://jqueryui.com//demos/dialog/modal.html