to download yesterday's webcam archive (15 min interval), this can be run in a linux bas shell:
for f in $(wget --post-data="ajax=1&ajax_func=webcamData8922" -O - http://www.peoples.ch/de/webcam-flughafen-altenrhein-1 | tr "{" "\n" | awk -F "," '{print $1}' | awk -F '"' '{print $4}' | tr -d '\'); do echo "getting file: $f"; wget --quiet http://www.peoples.ch/webcam/archive/${f}; done