My problem is to visit the website

http://www.billiger-telefonieren.de/...-00%2000:00:00

and then there is a dropdown menu called Auslandpreise and if u click the button Hinzufügen that selected country will be added to the same webpage and after that i can extract the contents from that page.
Now the question is how to select all the elements from that menu and add it to the page from my Java program.