Use file mapping

extra/make_mapping.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+echo "var mapping = {" > mapping.js
+
+for file in {*,*/*,*/**/*}
+do
+
+filename="${file%.*}"
+fl="$(echo "$filename" | tr '[:upper:]' '[:lower:]')"
+md5=`md5sum ${file} | awk '{ print $1 }'`
+
+echo "\"$fl\": \"${file}?h=${md5}\"," >> mapping.js
+
+done
+
+echo "};" >> mapping.js
+