Rotate one whole page 90degrees in a document including header and footer created with fancyhdr [duplicate]

Possible Duplicate:
How to translate and rotate the heading of landscaped pages?

I have a thesis with header+footer on each page created using the fancyhdr package. On one page I have an oversized table which is rotated using the lscape package.

How can the header and footer for this page only also be rotated such that they are the same direction as the table? MWE below.

\documentclass[a4paper,12pt,twoside]{book}
\usepackage{pdflscape}
\usepackage{fancyhdr}

\fancyhf{}
\pagestyle{fancy}
\fancyfoot[LE,RO]{This if my footer: \thepage}

\begin{document}

\begin{landscape}
\centering
\begin{table}
\begin{tabular}{ll}
1 & 2 \\
3 & 4 \\
\end{tabular}
\end{table}
\end{landscape}

\end{document}