Archival General De Indias

I found this link where Archive of Indias. There is a list of countries to pick on the left side. I pick "Mexico"

and a submenu of another list comes up. I select one of those to see a different time frame. Then on the right when you scroll down there is an image of a computer which you click on and archivos come up:

http://www.archivesportaleurope.net/ead-display/-/ead/pl/aicode/ES-41091-AGI10/type/fa/id/ES-AGI-41091-UD-1928215/unitid/ES-AGI-41091-UD-66086

Example:

http://oi60.tinypic.com/23jh8yf.jpg