split remaining utilities from shared

common/script/libs/silver.js

@@ -0,0 +1,11 @@
+/*
+Silver amount from their money
+ */
+
+module.exports = function(num) {
+  if (num) {
+    return ("0" + Math.floor((num - Math.floor(num)) * 100)).slice(-2);
+  } else {
+    return "00";
+  }
+};