Insertion de virgules dans une liste à longeur variable

	Name	Last modified	Size	Description
	Parent Directory		-
	HEADER.html	2005-01-14 09:19	57
	reference-entry.xml	2005-01-14 16:49	1.7K
	reference-entry.xsl	2005-01-14 16:47	1.4K
	simple-comma-list.xml	2005-11-26 16:28	845
	simple-comma-list.xsl	2005-11-26 16:26	759
	simple-list-bad.xml	2005-01-14 15:48	1.3K
	simple-list-bad.xsl	2005-01-14 15:47	805
	simple-list.xml	2005-01-14 15:55	899
	simple-list.xsl	2005-06-24 18:55	1.0K