If you have errors or something... when I open it with IE I get an error:
SCRIPT5: Access is denied.
select.js, line 134 character 7
that I suppose is because the application is loaded on that server, I don't know how it looks in your environment (or is that the real environment??) and if you get some error there when you close the window. There are also errors like
196887main_externalsource_header.js, line 25 character 658
SCRIPT5007: Unable to get value of the property 'init': object is null or undefined