diff --git a/README.md b/README.md
index 01046c5..b7b7691 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,8 @@ Alternative block explorers:
 
 The key features of the Onion Monero Blockchain Explorer are:
 
- - no javascript, no cookies, no web analytics trackers, no images,
+ - no cookies, no web analytics trackers, no images,
+ - by default no JavaScript, but can be enabled for client side decoding and proving transactions,
  - open sourced,
  - made fully in C++,
  - showing encrypted payments ID,
@@ -176,6 +177,8 @@ xmrblocks, Onion Monero Blockchain Explorer:
   --show-cache-times [=arg(=1)] (=0)    show times of getting data from cache 
                                         vs no cache
   --enable-block-cache [=arg(=1)] (=0)  enable caching of block details
+  --enable-js [=arg(=1)] (=0)           enable checking outputs and proving txs
+                                        using JavaScript on client side
   --enable-autorefresh-option [=arg(=1)] (=0)
                                         enable users to have the index page on 
                                         autorefresh
diff --git a/src/page.h b/src/page.h
index f53b927..082a6ec 100644
--- a/src/page.h
+++ b/src/page.h
@@ -404,6 +404,16 @@ namespace xmreg
                 template_file["config.js"]       = xmreg::read(JS_CONFIG);
                 template_file["biginteger.js"]   = xmreg::read(JS_BIGINT);
 
+
+                // need to set  "testnet: false," flag to reflect
+                // if we are running testnet or mainnet explorer
+
+                if (testnet)
+                    template_file["config.js"] = std::regex_replace(
+                                                    template_file["config.js"],
+                                                    std::regex("testnet: false"),
+                                                    "testnet: true" );
+
                 js_html_files += "<script src=\"/js/jquery.min.js\"></script>";
                 js_html_files += "<script src=\"/js/crc32.js\"></script>";
                 js_html_files += "<script src=\"/js/biginteger.js\"></script>";
diff --git a/src/templates/js/config.js b/src/templates/js/config.js
index 03f521f..993b272 100755
--- a/src/templates/js/config.js
+++ b/src/templates/js/config.js
@@ -1,5 +1,5 @@
 var config = {
-    testnet: false, //@todo need to make it automated
+    testnet: false, // this is adjusted page.h if needed. dont need to change manually
     coinUnitPlaces: 12,
     txMinConfirms: 10,         // corresponds to CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE in Monero
     txCoinbaseMinConfirms: 60, // corresponds to CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW in Monero