Error: namespace declaration attributes is not supported in DTD

Hello,
I have a problem with SVG.  The following SVG-Script works, if I start it
directly from the Windows Explorer 
("C:\www\show_the_rectangle.svg"). If the mouse is moved over the text
'R105', a window appears with 
the text  'A3C40050456':

 <<show_the_rectangle.svg>>  <<ok.jpg>> 

However if I start this SVG-Script on our Intranet-server ("http:
//flexnet.flextronics.com/show_the_rectangle.svg")
I get the following error message:

	The XML side cannot be indicated. The XML input cannot be indicated,
if Stylesheet XSL is used.  Repair the error and then click on updating <
javascript:location.reload() >, or repeat the procedure later.  
	
----------------------------------------------------------------------------
----------------------------------------------------------------------------
----------------
	Using standard namespace declaration attributes is not supported in
DTD.  Error when working on resources 
	'http: //flexnet.flextronics.com/show_the_rectangle.svg'.  Line 4,
position 31 
	<svg width="300 "height="300">

Do you know this problem?
I use windows NT 4.0, the Microsoft-Internet-Explorer version 6.0.2600 and
the Adobe SVG-Viewer 3.0.

BerndFormularbeginn