Did I get this right?
      <mousebind button="Down" action="Click">
        <action name="NextWindow">
          <dialog>none</dialog>
          <bar>yes</bar>
          <raise>yes</raise>
          <linear>no</linear>
          <finalactions>
            <action name="Focus">
              <stopInteractive>true</stopInteractive>
            </action>
          </finalactions>
        </action>
      </mousebind>
This still doesn't do it for me. :(