diff --git a/scripts/getMadame.sh b/scripts/getMadame.sh
index 2e79c97..6be6eb2 100755
--- a/scripts/getMadame.sh
+++ b/scripts/getMadame.sh
@@ -8,13 +8,36 @@
 # Link : http://www.magetys.com
 # Version : 1.0.1
 # Dependency : libnotify-bin
+# Optionnal : imagemagick
 # Note : Works on Gnome and Xfce
 #
 ###########################################
 page=
 
+set -x
+function usage {
+    script_name=`basename "$0"`
+    echo "Usage $script_name [Day]"
+    echo "Day to displae (1 for today, 2 for yesterday, 3 for the day before ...)"
+}
+
+
+function is_a_number {
+    if echo $1 | grep '^[0-9]+$' &> /dev/null
+    then
+        return 0
+    else
+        return 1
+    fi
+}
+
 if [ $# != 0 ]
 then
+    if is_a_number $1 ; 
+    then
+        usage
+        exit
+    fi
     page="/page/${1}"
 fi
 
@@ -42,7 +65,13 @@ function fixdbus {
 
 function resize {
     # Get screen size
-    res=$(xdpyinfo | grep dimensions | awk '{print $2}')
+    res=
+    if [ -e /usr/bin/xrandr ];
+    then
+        res=$(xrandr | tail -1 | awk '{print $1}')
+    else
+        res=$(xdpyinfo | grep dimensions | awk '{print $2}')
+    fi
     tailleX=$(echo $res | awk -F "x" '{print $1}');
     tailleY=$(echo $res | awk -F "x" '{print $2}');
     echo "Screen Size is X: $tailleX, Y: $tailleY"