SIMPLEST IDEA: HAVE A PLACE ON SCREEN/PAGE TO RECEIVE OWN ERR.MSGS [add this to webpage.html, probably at bottom or top] [use PRE if trace string has LFs in; can't get
to work w/o inserting nodes; SPAN is alternative if you can. But see end for 'domyerrmsg'.]

My Java error messages:

x 

x
[AND add one of these to