diff --git a/js/refresh.js b/js/refresh.js
index 90ada10..2605e8e 100644
--- a/js/refresh.js
+++ b/js/refresh.js
@@ -1,12 +1,28 @@
 (function(Mibew) {
     Mibew.APIFunctions.refreshButton = function(data) {
-        // Refresh the button image (if exists)
+
+        var button_object;
+
         var button = document.getElementById("mibew-agent-button");
-        if (!button) { return; }
-        var img = button.getElementsByTagName("img")[0];
-        if (!img) { return; }
-        var originalSrc = img.src.replace(/&dummy=\d+/, '');
-        img.src = originalSrc + "&dummy=" + (new Date()).getTime();
+        if (!button) {
+            // The button is operator code field
+            button_object = document.getElementById("mibew-operator-code-field");
+        }
+        else {
+            button_object = button.getElementsByTagName("img")[0];
+            if (!button_object) {
+                // The button is text link
+                button_object = button;
+            }
+            else {
+                // The button is image, refresh it
+                var originalSrc = button_object.src.replace(/&dummy=\d+/, '');
+                button_object.src = originalSrc + "&dummy=" + (new Date()).getTime();
+            }
+        }
+
+        // Unable to find button of any type - nothing to do
+        if (!button_object) { return; }
 
         // Hide the button if all popups are open or make it visible otherwise
         var visible = false;
@@ -18,20 +34,20 @@
         // Check whether we actually need to hide the button
         if (data.refreshButton.mode != 'none') {
             if (data.refreshButton.mode == 'visibility') {
-                img.style.visibility = visible ? 'visible' : 'hidden';
+                button_object.style.visibility = visible ? 'visible' : 'hidden';
             }
             else if (data.refreshButton.mode == 'display') {
-                img.style.display = visible ? data.refreshButton.submode : 'none';
+                button_object.style.display = visible ? data.refreshButton.submode : 'none';
             }
         }
 
         // Set appropriate class for the button depending on its alleged visibility
-        img.className = img.className.replace(/ mibew_(visible|hidden)/, '');
+        button_object.className = button_object.className.replace(/ mibew_(visible|hidden)/, '');
         if (visible) {
-            img.className = img.className.concat(' mibew_visible');
+            button_object.className = button_object.className.concat(' mibew_visible');
         }
         else {
-            img.className = img.className.concat(' mibew_hidden');
+            button_object.className = button_object.className.concat(' mibew_hidden');
         }
     }
 })(Mibew);