jQueryUI modal dialog does not show close button (x)

Question

I\'m using a jQuery modal dialog in my ASP .NET MVC 3 application. It works fine except for that there is no close button showing in the top right corner. How can I add thi

Answer 1

Using the principle of the idea user2620505 got result with implementation of addClass:

...
open: function(){
    $('.ui-dialog-titlebar-close').addClass('ui-button ui-widget ui-state-default ui-corner-all ui-button-icon-only');
    $('.ui-dialog-titlebar-close').append('close');
}, 
...

If English is bad forgive me, I am using Google Translate.