differences between namespaces lines

Hi, I have a trouble with transform a xml document to html.  Some examples
have the line:

1. <xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

and when I compile nothing happend, and the code resource of the webpage is
the xsl code.  And others examples of microsoft have the line:

2. <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/TR/WD-xsl">

but when I change the 1st. line for the 2nd. line on the same xsl document,
it shows the error:

'keyboard xsl:ELEMENT may not be used here.'

And have a question: which is the differences between the 1st. line and the
2nd. line? and receive solutions about this problem.

Thanks,

Dagoberto Flores,
Salsa Trade Latin America, S.A.


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list