diff --git a/chata/index.html b/chata/index.html
new file mode 100644
index 0000000..03e26f4
--- /dev/null
+++ b/chata/index.html
@@ -0,0 +1,116 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <title>MQTT</title>
+  <style>
+    body {background:rgb(255,255,196);}
+    .emscripten { padding-right: 0; margin-left: auto; margin-right: auto; display: block; }
+    textarea.emscripten { font-family: monospace; font-size: 18px; width: 100%; overflow-x: scroll;
+      white-space: pre; background: black; color: rgb(0,255,0);}
+    .button {
+      background-color: #04AA6D;  border: none; color: white; padding: 15px 32px; text-align: center;
+      text-decoration: none; display: inline-block; font-size: 48px; }
+  </style>
+  <script src="https://unpkg.com/mqtt/dist/mqtt.min.js"></script>
+</head>
+  <body>
+    <h1>Dálkové ovládání chaty.</h1>
+    <table>
+    <tr>
+      <td><button class="button" id="ConnButton" onClick="Connection();">Connect</button></td>
+      <td><button class="button" id="MainButton" onClick="chPower(Main);" disabled>Hlavní vypínač</button></td>
+      <td><button class="button" id="RefrButton" onClick="chPower(Refr);" disabled>Lednice</button></td>
+    </tr>
+    <tr>
+    <td colspan=3><textarea class="emscripten" id="output" rows="10" spellcheck="false"></textarea></td>
+    </tr>
+    </table>
+    <script>
+    const onColor = '#00ff00';
+    const ofColor = '#ff0000';
+    const ConnBtn = document.getElementById('ConnButton');
+    const TextOut = document.getElementById('output');
+    const url = 'ws://broker.emqx.io:8083/mqtt'
+    // Create an MQTT client instance
+    const options = {
+      // Clean session
+      clean: true,
+      connectTimeout: 4000,
+      // Authentication
+      clientId: 'js-client-www',
+      username: 'Kizarm',
+      password: 'N9ZjCF3hYI8r',
+    }
+    var Connected  = false;
+    var Main = {status:false, btn:document.getElementById('MainButton'), tstr:'mainpw'};
+    var Refr = {status:false, btn:document.getElementById('RefrButton'), tstr:'refrig'};
+    var client;
+
+    function Connection() {
+      if (Connected) {
+        Connected = false;
+        client.end()
+        ConnBtn.innerHTML = 'Connect';
+        Main.btn.disabled = true;
+        Refr.btn.disabled = true;
+        TextOut.value = "Disconnected\n"
+      } else {
+        if (!mqtt) {
+          TextOut.value = 'Sorry, MQTT not supported !';
+          return;
+        }
+        client = mqtt.connect(url, options)
+        client.on('connect', function () {
+          Connected = true;
+          TextOut.value += 'Connected to ' + url + '\n';
+          ConnBtn.innerHTML = 'Disconnect';
+          Main.btn.disabled = false;
+          Refr.btn.disabled = false;
+          // Subscribe to a topic
+          client.subscribe('chata/status/#', function (err) {
+            if (!err) {
+              // Publish a message to a topic
+              client.publish('chata/command', '???');
+            }
+          })
+        })
+        function ChangeStatus (relay, tmsg) {
+          if (tmsg === '0') {
+            relay.status = false;
+            relay.btn.style.background = ofColor;
+          } else {
+            relay.status = true;
+            relay.btn.style.background = onColor;
+          }
+        }
+        // Receive messages
+        client.on('message', function (topic, message) {
+          const tstr = topic.toString();
+          const tmsg = message.toString();
+          const tsta = 'chata/status/';
+          // message is Buffer
+          TextOut.value += tstr + ' : ' + tmsg + '\n';
+          if        (tstr === tsta + Main.tstr) {
+            ChangeStatus (Main, tmsg);
+          } else if (tstr === tsta + Refr.tstr) {
+            ChangeStatus (Refr, tmsg);
+          }
+        })
+      }
+    }
+    function chPower (relay) {
+      if (relay.status) {
+        relay.status = false;
+        client.publish('chata/command/' + relay.tstr, '0');
+        TextOut.value += relay.tstr + ' off\n';
+      } else {
+        relay.status = true;
+        client.publish('chata/command/' + relay.tstr, '1');
+        TextOut.value += relay.tstr + ' on\n';
+      }
+    }
+    </script>
+  </body
+</html>
+
diff --git a/zadost.pdf b/zadost.pdf
deleted file mode 100644
index 9b9d518..0000000
Binary files a/zadost.pdf and /dev/null differ
