While diagnosing a problem users have with some sites, I have found that the console reports the same type of error.
Test sites :
-
http://www.espn.com/ (select NHL score)
-
http://sports.yahoo.com/ten/slideshow_frame
the slideshow is not visible in KM, but is in Mozilla.
In the javascript console you'll see this error:
uncaught exception: [Exception... "Cannot find interface information for parameter arg 0 [nsIDOMWindowInternal.controllers]" ...
In the js code on these pages
http://sports.yahoo.com/sports/us/js/ua.js
for yahoo,
the detectBrowser function has this:
typeof(window.controllers)
In the urlbar type
javascript: typeof(window.controllers)
in Mfcembed (installed in Mozilla dir), this text appear in the window:
"object"
in KM nothing appears, but the console shows an error message.
Obviously we're still missing some part of javascript (cf the javaEnabled() function previously missing)
I'll try more tests and report here.