Here's an alternative to wbar that I like, using the "popup" feature in JWM. The taskbar only appears when the mouse pointer is at the top of the screen, and pops up over the browser window.
[removed due to policy]apps/taskbar.png
[removed due to policy]apps/noicons.png
<JWM>
<Tray autohide="true" insert="right" valign="top" halign="center" height="25" >
<!TrayButton popup="" icon="nothing.png">exec:</TrayButton>
<!TrayButton popup="" icon="nothing.png">exec:</TrayButton>
<!TrayButton popup="" icon="nothing.png">exec:</TrayButton>
<TrayButton popup="Aterm - terminal emulator" icon="/usr/share/wbar/aterm.png">exec:aterm</TrayButton>
<TrayButton popup="Panel - Control Panel" icon="/usr/share/wbar/cpanel.png">exec:cpanel</TrayButton>
<TrayButton popup="Apps - Appbrowser" icon="/usr/share/wbar/appbrowser.png">exec:appbrowser</TrayButton>
<TrayButton popup="gnumeric" icon="/usr/local/tce.icons/gnumeric.png">exec:gnumeric</TrayButton>
<TrayButton popup="gftp" icon="/usr/local/tce.icons/gftp2.png">exec:gftp-gtk</TrayButton>
<!TrayButton popup="" icon="nothing.png">exec:</TrayButton>
<Clock format="%a %d %b %k:%M"></Clock>
<TrayButton label="_">showdesktop</TrayButton>
<!-- Additional Pager attributes; width, height -->
<Pager/>
<!-- Additional TaskList attribute: maxwidth -->
<TaskList/>
</Tray>
</JWM>