Next we show how to remove the left navigation.
leftnav.enable=false # leftnav.vm=left.vm # leftnav.width=10%
leftnav.enable turns on or off the left navigation. The JPortal tutorial site doesn't require a left navigation, so we turn it off.
leftnav.vm You can use your own JSP or Velocity template here to customize your left navigation.
lefnav.width specifies the percentage of the page width to be covered by the left navigation.