This recipe shows how to hide the top bar and to put the logo in the left bar.
Add the dynamic link to the logo image to the topic text:
<style type="text/css" media="all">
#patternSideBar { background-image:url("%PUBURLPATH%/%WEB%/%WEBPREFSTOPIC%/logo.gif"); }
</style>

If you don't write this overloading style in a template and use an external
.css
file, you need to set the image to the absolute url:
<style type="text/css" media="all">
#patternSideBar { background-image:url("/pub/System/WebPreferences/logo.gif"); }
</style>
You can always write a
<style>
in a topic - all current browsers support this - but the page won't validate as valid XHTML.
