Error message "Your browser does not support JAVA SCRIPT"
It is very simple. Your browser is out of date and does not support script language called "Java".
This feature is enabled in Microsoft Internet Explorer version 3.0 and higher.
I am not sure about Netscape Navigator. Version 2.02 is not able to support it.
If this message appears the simplest way to correct it is to download newer browser.
If you have got serious reasons not to do it (eg. you love your Windows 3.1), you can read help messages
on the "status bar" - see image.