[texhax] Floats and captions

[Johan Glimming]

Hi

I am having some problems with floats. I use

   \usepackage{floats,caption}
   ...
   \newfloat{floatdefn}{def}{Definition}
   \floatname{floatdefn}{Definition}
   \makeatletter
     \let\c at floatdefn\c at thm
   \makeatother

and then

   \newenvironment{floatdfn}[2][t]
     {\begin{floatdefn}[#1]
      \TU
      \caption{(#2)}\smallskip}
     {\BU\end{floatdefn}}

I have two problems:

1. How do I change the caption to be _over_ the content
    of the float (\TU and \BU generates lines over and
    under the float, I'd like the caption to be over
    the top line in boldface, with numbers).

2. \let\c at floatdefn\c at thm
    was intended to number floatdefns just like
    theorems and definitinions using the thm counter.
    However, now I am using the llncs.cls style and
    suddenly I get a weird error from this line. I
    was thinking maybe the counter behaves differently
    or has a different name than "thm"?

Johan Glimming