mootools/mootools-core — pull request #2401 by gonchuki (2012-08-09 15:37:36+00:00)
Title: Fix for #2325 and #2364 (should also fix -more 1125)

remove Browser.ie check as Opera also returns non-numeric value when border.*Width is queried and that property is unset.

The fact that Opera returns "medium" when the border is unset must not be interpreted as 3px as suggested in #2364 since that string is actually a quirk from the browser (the border is actually 0px, Dragonfly properly shows this property as being unset in the layout pane).