Netscape Navigator: Choose OPTIONS from your menu bar. Choose NETWORK PREFERENCES.
Choose LANGUAGES. Make sure that ENABLE JAVA, and ENABLE JAVA SCRIPT is enabled. Choose OK.
Internet Explorer: Choose VIEW from your Menu bar. Choose OPTIONS. Choose the ADVANCED tab.
Make sure that ENABLE JAVA JIT COMPILER, and ENABLE JAVA LOGGING are both checked. Choose OK.
Restart your browser for the settings to take effect.