Thanks for the great hint. I did try the simpleviewer 1.9 and it's working without a problem.
See http://lewis.eduh.nl/tmp19/index1.html
It seems the swfobject code doesn't have to be in the head but can be run anywhere in the page.

Is there a way to instantiate the simpleviewer 2.0 in the same way as v.19 ?
Something like
var fo = new SWFObject("simpleviewer.swf", .............);

Thanks for the quick response but unfortunately it makes no difference at all.
With the corrected  code player1+2  still displays in every jquery tab.
See http://lewis.eduh.nl/tmp/index1.html

Saw some problems with JQuery Tabs but I can't find a solution.
I have 2 simpleviewers and the content is loaded into tab1 and tab2
In Firefox+Chrome this works fine.
See  http://lewis.eduh.nl/tmp/index1.html
Every viewer is loaded in the correct tab and displayed only once.
However in IE 8 (or perhaps other versions as well)  the content is loaded in every tab which I don't want.

BTW: if I use the tiltviewer the problem does not occur