diff --git a/docs/datatxmap.js b/docs/datatxmap.js
new file mode 100644
index 0000000..cbb5735
--- /dev/null
+++ b/docs/datatxmap.js
@@ -0,0 +1,73 @@
+function dataToTx(data) {
+  console.log(moment().format("HH:mm:ss") + " dataToTx: " + JSON.stringify(data, bigNumberReplacer, 2));
+  let tx = null;
+  return tx;
+}
+
+function txToData(tx, oldData) {
+  console.log(moment().format("HH:mm:ss") + " txToData: " + JSON.stringify(tx, bigNumberReplacer, 2));
+  let data = null;
+
+  // ERC-20 transfer
+  if (tx.data && tx.data.length == 138 && tx.data.substring(0, 10) == "0xa9059cbb") {
+    const tokensTo = ethers.utils.getAddress(tx.data.substring(34, 74));
+    const tokens = ethers.BigNumber.from("0x" + tx.data.substring(75, 138));
+    data = {
+      action: "erc20transfer",
+      token: tx.to,
+      from: tx.from,
+      to: tokensTo,
+      amount: null,
+      amountUnit: oldData && oldData.amountUnit || "ether", // TODO: Move out of data into settings
+      tokens: tokens.toString(),
+      data: null,
+      chainId: tx.chainId,
+      nonce: tx.nonce,
+      gasLimit: tx.gasLimit,
+      transactionType: tx.type,
+
+      // gasPrice: null,
+      // maxFeePerGas: null,
+      // maxPriorityFeePerGas: null,
+      // maxFeePerGasUnit: "gwei",
+      // maxPriorityFeePerGasUnit: "gwei",
+      // gasPriceUnit: "gwei",
+      // signedTx: null,
+      // decodedSignedTx: null,
+      // error: null,
+
+    };
+  // ETH tx
+  } else if (tx.data == null || tx.data == "0x") {
+    data = {
+      action: "ethtransfer",
+      token: null,
+      from: tx.from,
+      to: tx.to,
+      amount: tx.value.toString(),
+      amountUnit: oldData && oldData.amountUnit || "ether", // TODO: Move out of data into settings
+      tokens: null,
+      data: null,
+      chainId: tx.chainId,
+      nonce: tx.nonce,
+      gasLimit: tx.gasLimit,
+      transactionType: tx.type,
+
+      // gasPrice: null,
+      // maxFeePerGas: null,
+      // maxPriorityFeePerGas: null,
+      // maxFeePerGasUnit: "gwei",
+      // maxPriorityFeePerGasUnit: "gwei",
+      // gasPriceUnit: "gwei",
+      // signedTx: null,
+      // decodedSignedTx: null,
+      // error: null,
+
+    };
+  } else {
+    alert("Unknown transaction");
+  }
+  console.log("data: " + JSON.stringify(data, bigNumberReplacer, 2));
+
+  return data;
+}
diff --git a/docs/offline.html b/docs/offline.html
index f6ac6c5..117a1a0 100644
--- a/docs/offline.html
+++ b/docs/offline.html
@@ -22,6 +22,7 @@
     <script src="globals.js"></script>
     <script src="chains.js"></script>
     <script src="deploymentData.js"></script>
+    <script src="datatxmap.js"></script>
 
     <link rel="apple-touch-icon" sizes="180x180" href="images/apple-touch-icon.png">
     <link rel="icon" type="image/png" sizes="32x32" href="images/favicon-32x32.png">
@@ -572,6 +573,7 @@
               to: null,
               amount: null,
               amountUnit: "ether",
+              tokens: null,
               data: null,
               chainId: null,
               nonce: null,
@@ -897,8 +899,30 @@
             this.loadTx = {};
             const t = this;
             reader.onload = function (event) {
-              const data = event.target.result;
-              t.loadTx = JSON.parse(data);
+              const unsignedTx = JSON.parse(event.target.result);
+              console.log(moment().format("HH:mm:ss") + " loadJSON - unsignedTx: " + JSON.stringify(unsignedTx, bigNumberReplacer, 2));
+
+              // console.log("unsignedTx.data.length: " + unsignedTx.data.length);
+              if (unsignedTx.data == "0x") {
+                unsignedTx.data = null;
+              }
+              // 0xa9059cbb0000000000000000000000005d446d064757cc92efe92548f2d7b7a3eab303620000000000000000000000000000000000000000000000000de0b6b3a7640000
+              //           1         2         3         4         5         6         7         8         9        10        11        12        13
+              // 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567
+
+              const txData = txToData(unsignedTx);
+              // ERC-20 transfer
+              if (unsignedTx.data && unsignedTx.data.length == 138 && unsignedTx.data.substring(0, 10) == "0xa9059cbb") {
+                const to = ethers.utils.getAddress(unsignedTx.data.substring(34, 74));
+                // console.log("to: " + to);
+                const tokens = ethers.BigNumber.from("0x" + unsignedTx.data.substring(75, 138));
+                // console.log("tokens: " + tokens);
+              // ETH tx
+              } else if (unsignedTx.data == null) {
+              } else {
+                alert("Unknown transaction");
+              }
+              t.loadTx = unsignedTx.data;
             };
             await reader.readAsText(fileList[0]);
           },
diff --git a/docs/online.html b/docs/online.html
index 9c055f3..35edb3a 100644
--- a/docs/online.html
+++ b/docs/online.html
@@ -22,6 +22,7 @@
     <script src="globals.js"></script>
     <script src="chains.js"></script>
     <script src="deploymentData.js"></script>
+    <script src="datatxmap.js"></script>
 
     <link rel="apple-touch-icon" sizes="180x180" href="images/apple-touch-icon.png">
     <link rel="icon" type="image/png" sizes="32x32" href="images/favicon-32x32.png">
@@ -1031,7 +1032,7 @@
             var encodedUri = encodeURI(jsonContent);
             var link = document.createElement("a");
             link.setAttribute("href", encodedUri);
-            link.setAttribute("download", "topsecrets_online_-" + moment().format("YYYY-MM-DD-HH-mm-ss") + ".json");
+            link.setAttribute("download", "topsecrets_online_" + moment().format("YYYY-MM-DD-HH-mm-ss") + ".json");
             document.body.appendChild(link); // Required for FF
             link.click(); // This will download the data with the specified file name
           },