Document Classes ⇒ beamer - Two Logos in Presentation

[dagna]

My professor require that the presentation on each slide were two logos in the header (the university and the institute). Therefore, I need to insert a second logo in the upper right corner. Presentation is scheduled to look like this:

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+----------------------------------------------------------+
| logo  |             header                       | logo  |
|----------------------------------------------------------|
| Author|                                                  |
| Title |                                                  |
|       |                                                  |
| table |                                                  |
|  of   |               content of page                    |
|content|                                                  |
|       |                                                  |
|       |                                                  |
+----------------------------------------------------------+

Has anyone encountered this problem?

Thank you in advance and best regards!

[dagna]

Here is my problem:
http://groups.google.com/group/latexuse ... 8186?pli=1

On the basis that I wrote it:

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\newcommand {\logosecond} {\includegraphics[height=45pt]{obrazy/logo_IIE}}
\let \oldmacro \frametitle
\renewcommand{\frametitle}[1]{\oldmacro{#1} \hfill \logosecond }

But, when I inserted line

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\setbeamertemplate{frametitle}[default][none] 

I have error:

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! Package xkeyval Error: 'none' undefined in families 'beamercolbox'.

Why have I this error? I use MikTeX 2.9 and PaloAlto.

Help, please.