[OS X TeX] change header tableofcontents

[gertlist at mac.com]

hi all,
the tableofcontents that is generated in my document has the header  
"Contents". Is there a way to change this word "Contents" in the header?

for your below is the file I'm using.

thanks,
Gert

\documentclass[12pt]{article}
\usepackage{geometry}
\usepackage{makeidx}
\makeindex
\geometry{a4paper}
\usepackage[colorlinks=true, pdfstartview=FitV, linkcolor=blue,  
citecolor=blue, urlcolor=blue]{hyperref}
\usepackage{graphicx}
\usepackage{color}
\usepackage{ulem}
\usepackage{wrapfig}
\usepackage{lscape}

\title{this is a report}
\author{me}


\begin{document}
\maketitle
\tableofcontents
\section{paragraaf}
my report
\printindex
\end{document}
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