I understand that you want to know if you can use the Slingbox PRO HD in Indonesia.
The short answer is yes. The listed countries on the website first page will pick up the language you will use on the website. In all case, I recommend you to check the following link in order to get the tech specs for the Slingbox PRO HD.
I also encourage you to check this link in order to know the information about the supported web browser versions.