XSLT: A simple way to merge xml files

Question

I have two xml files. I need to merge them together where the element \"myid\" matches between the two. Please have a look at these example files...

File1.xml:

Answer 1

I have been researching a bit and found a fairly similar question here: http://forums.tizag.com/showthread.php?p=76699

Here is what I have come up with, this seems to be mostly working except that Firefox is not recognizing it as an xml file even though I have added the xml:output.

File1.xml (note line two, referencing our transformation):

  
    
    Description1
    1
  

  
    
    Description2
    2
  

File2.xml:

  
    Author1
    12/34/5678
    1
  

  
    Author2
    87/65/4321
    2
  

merge.xsl:

Output xml when viewing File1.xml:

  
    
    Description1
    1
    Author1
    12/34/5678
  

  
    
    Description2
    2
    Author2
    87/65/4321