Here's the site with the ingredients of all the versions of Windex http://www.scjohnson.com/msds_us_ca/windex.asp
Here's the ingredients in Original (sold as "Windex Blue" in Canada)
That's strange, if you look at the ingredients it lists two types of alcohol (one with ether) and water as the three ingredients, it doesn't list ammonia and it certainly doesn't smell like there is ammonia in it, but if you search "Ammonia" on their site, Windex Original pops up?! Any Chemical Engineers out there?
Also, Olevia Recommends NO AMMONIA, but say in the user manual Windex Original is OK.
Also it's rated as 0 on the Health Hazard Rating on their document and if it had ammonia in it it would have to be rated as some health risk.
OK, after looking at the whole document (there is more on their site) I believe
( but please, make your own judgement) that "Ammonia-D" is not actually ammonia just a "Trade Name" for an ingredient that they used to replace ammonia for safety reasons in window cleaners.