Is it Java or is it Iceweasel?

["Dennis G. Wicks" <wix@eskimo.com>]

Greetings;

I am having problems with some web pages not working.
(Not working means just that. The details vary from page
to page.)

When I check the error console I find a lot of messages
like:

    Warning: assignment to undeclared variable speed
    Warning: assignment to undeclared variable len
    Warning: assignment to undeclared variable tid

I know from looking at some of my own pages that these
are referring to Java statements in the html similar to this:

   <script language="javascript">
   <!-- Clock in Java Script ..
   var dateform
   speed=1000
   len=56
   tid = 0;
   ...

This is old code and works fine on other systems, etc.

So, any ideas how to fix this?

Is it Iceweasel, Java or Debian?

Many TIA as usual,
Dennis