How to create a document wide table style for border

Question

Possible Duplicate:
How to separate table content and table style

is it possible to create a document wide table setting for how table border are applied for each table?

I want to have the first table line have bold borders on top and bottom and the last row of a table should have a bold border at the bottom. As i do not want to specify all of this for each table, is there a way to do it one?

====================
row 1
====================
row 2
--------------------
row ..
------------------
row n
===================

Legend:

"==" -> bold border

"--" -> normal border

Answer 1

Below, I have defined a myTabular environment that you can use. It takes two parameters: the first is the usual parameter for tabular to specify the alignment, the second is the header row. So specifying something such as:

\begin{MyTabular}{c c}{Header 1 & Header 1}
    1.234  & 2.345\\\hline
    4.5678 & 5.123\\
\end{MyTabular}

produces:

References:

• This thick horizontal rule is from How can I reproduce this table with thick lines?

Code:

\documentclass{article}
% https://tex.stackexchange.com/questions/41758/how-can-i-reproduce-this-table-with-thick-lines
\makeatletter
\newcommand{\thickhline}{%
    \noalign {\ifnum 0=`}\fi \hrule height 1pt
    \futurelet \reserved@a @xhline
}
\makeatother
\newenvironment{MyTabular}[2]{%
    \begin{tabular}{#1}%
    \thickhline#2\\thickhline%
}{%
    \thickhline%
    \end{tabular}%
}%
\begin{document}
\noindent
\begin{MyTabular}{c c}{Header 1 & Header 1}
    1.234  & 2.345\\hline
    4.5678 & 5.123\
\end{MyTabular}
\end{document}