Example code:

<zk>
<borderlayout>
<west><image src="/images/logout.png"/></west>
<center><image src="/images/logout.png"/></center>
<east><image src="/images/logout.png"/></east>
</borderlayout>
</zk>

In IE and FF, all components are shown correctly. In Chrome, the images in the west and east components are not visible.