diff --git a/programs/cmm/lib/hash.h b/programs/cmm/lib/hash.h
new file mode 100755
index 0000000000..5d3fd180a0
--- /dev/null
+++ b/programs/cmm/lib/hash.h
@@ -0,0 +1,27 @@
+/* hash function; Author PaulCodeman */
+
+
+/*
+String.prototype.hashCode = function() {
+  var hash = 0, i, chr;
+  if (this.length === 0) return hash;
+  for (i = 0; i < this.length; i++) {
+    chr   = this.charCodeAt(i);
+    hash  = ((hash << 5) - hash) + chr;
+    hash |= 0; // Convert to 32bit integer
+  }
+  return hash;
+};
+*/
+
+inline dword hashCode(dword data, length)
+{
+	dword hash = 0;
+	WHILE (length)
+	{
+		hash = hash << 5 - hash + DSBYTE[data];
+		data++;
+		length--;
+	}
+	RETURN hash;
+}