Originally Posted by Valloric
Well then you would create one footer with both footnotes, and put it above the first reference. You would clear it after the second reference. That way the footer would be in effect while either of the two references are visible, and disappear after they are gone.
That only works for footnotes that are very short. Otherwise the footer line becomes a paragraph and doesn't fit on the page any longer.
Personally I think a footnote should be done as <ref>This is a footnote</ref> and let the rendering program do it however it wishes. For example you might select the footnote and the program could pop up a window to display it in.