The latest versions of Netscape, Internet Explorer, Firefox, etc., enable you to set your window to Czech characters by selecting
View > [Character] Encoding > Central European [Windows 1250]You should return to your default character set when visiting other pages, or you can repeat process and click "Western."
Povídka o malém kamínku na Marzu -- Czech version of "A Little Rock on Mars"
View > [Character] Encoding > Japanese (Shift-JIS)You should return to your default character set when visiting other pages, or you can repeat process and click "Western."