Getting rid of the Figure 1 : bit

In my Latex document I have a number of figures with Captions like the following :

\begin{wrapfigure}{l}{0.35\textwidth}
  \begin{center}
    \includegraphics[width=0.25\textwidth]{zhangsanfeng.jpg}
  \end{center}
  \caption{Zhang Sanfeng}
\end{wrapfigure}

This will give me the picture and a caption of Figure 1 : Zhang Sanfeng

I want to get rid of t开发者_如何学Pythonhe Figure 1 : bit.

I have the following :

\renewcommand{\figurename}{}    
\renewcommand{\thefigure}{}    

This gets rid of the Figure 1 but does not get rid of the : so I am left with : Zhang Sanfeng.

How do I get rid of this?

Also, is there any resource available that lists the commands that can be renewed.. I can't find anything anywhere!

Thanks.

Using the caption package:

\usepackage[labelformat=empty]{caption}

Will remove the "Figure n:" from your captions.