echo
}
-if [ "$#" <= "2" ]; then
+if [ -z "$1" -o ! -d "$2" ]; then
usage
exit 0
fi
files="`find $dir -name '*.jpg'`
`find $dir -name '*.JPG'`
`find $dir -name '*.jpe'`
-`find $dir -name '*.IPE'`"
+`find $dir -name '*.JPE'`
+`find $dir -name '*.png'`
+`find $dir -name '*.PNG'`"
-./dfb-photoshow $1 $files
+[ ! -z "`echo $files | sed 's/\ //g'`" ] && ./dfb-photoshow $1 $files
echo
echo done