:alert(document.lastModified) as a bookmarklet works fine in Firefox.
For some reason in SRWare Iron it pops up a dialog box with no info.
Just make a bookmark on your bookmarks toolbar or whatever the IE equivalent is.
I named mine Mod, and put this for URL
Works fine in Opera too. I don't know what's up with Iron!
Hmmmmmmm, don't know how dependable it is though. I went to a Windows freeware site and it shows the mod date of Jan 1, 1970. I don't think so!!
It is annoying though when you do a search and read a page only to find out it's 2 years old. They should make a standard way to know the date of the page.
edit: Iron will show the info but I have to allow sites to show Popups to get it.
edit2: even at that it's hit and miss. Not good for Iron.