Hide Ubuntu Unity launcher when window is maximized

hide_launcher.sh

#!/bin/bash
# Install wmctrl before using: sudo apt-get install wmctrl
# From http://ubuntuforums.org/showthread.php?p=11761683

# User settings
sleep 8 # Time it takes before script starts with autodetection

DELAY="2" # Set delay

# End of user settings

ps -ef | grep "$0" | grep -v "grep\|$$\|/bin/sh" | awk '!/awk/ {print $2}' | xargs -r kill

if [ "$DESKTOP_SESSION" != "ubuntu" ]; then
    exit 0
fi

MAX_W="$(wmctrl -lG | awk '{if ($5 > max) { max = $5;}} END {print max}')"
MAX_H="$(wmctrl -lG | awk '{if ($6 > max) { max = $6;}} END {print max}')"

HIDE_Y="$(expr $MAX_H - 24)"

SHOW_X="$(expr $MAX_W - $(gconftool-2 --get "/apps/compiz-1/plugins/unityshell/screen0/options/icon_size") - 17)"
SHOW_Y="$(expr $MAX_H - 24)"

while true; do
sleep $DELAY

SHOW_LAUNCHER="$(wmctrl -lpG | grep -v "Hud\|Dash" | grep -c "$SHOW_X $SHOW_Y")" 
HIDE_LAUNCHER="$(wmctrl -lpG | grep -v "Hud\|Dash" | grep -c "$MAX_W $HIDE_Y")"

if [ "$SHOW_LAUNCHER" -eq "0" -a "$HIDE_LAUNCHER" -eq "0" ]
then
    CURRENT="$(gconftool-2 --get "/apps/compiz-1/plugins/unityshell/screen0/options/launcher_hide_mode")"
    if [ "$CURRENT" -ne "0" ]
    then
        gconftool-2 --type int --set "/apps/compiz-1/plugins/unityshell/screen0/options/launcher_hide_mode" 0
    fi
else
    CURRENT="$(gconftool-2 --get "/apps/compiz-1/plugins/unityshell/screen0/options/launcher_hide_mode")"
    if [ "$CURRENT" -ne "1" ]
    then
        gconftool-2 --type int --set "/apps/compiz-1/plugins/unityshell/screen0/options/launcher_hide_mode" 1
    fi
fi
done