Here is the original code for my function:
 
	http://www.theswamp.org/index.php?topic=46438.msg514570#msg514570
 
	 
 
	Here is another implementation of the method:
 
	http://www.theswamp.org/index.php?topic=45220.msg504240#msg504240
 
	 
 
	And here is the likely source of where you found the code in your post:
 
	http://www.theswamp.org/index.php?topic=45700.msg508403#msg508403