Im am using Firefox Plugin Selenium IDE for testing (not Webdriver or else). Some areas of my webapplication are only accessible after basic authentication:

At the moment, I have to stop the test and type the login-data manually. When I pass my login-data via url: http://username:password@mydomain.com/, there appears a windows, where I cannot press the OK-Button via Selenium IDE:

Is there any way to login via Selenium IDE automatically?