We’ve tested using prototype-ui on Firefox, Safari, IE, Opera. We’ve noticed when you set the resizable attribute to false, in IE and Opera, the modal dialog errors (it shows an empty modal that does not respond to the close click).

Here is an example Window call that causes this bug. If you omit setting resizable, IE and Opera work correctly:

function openLoginModal() { w = new UI.Window({theme:”alphacube”,shadow:true,width:250,height:210,resizable:false});

w.setHeader(‘Login’);

w.center().setContent($(‘modal_login_form’).innerHTML);

w.show().focus(); }