diff --git a/chrome.manifest b/chrome.manifest
index b6b6e5f..02362fa 100644
--- a/chrome.manifest
+++ b/chrome.manifest
@@ -1,7 +1,9 @@
-content filter_button chrome/content/
-skin filter_button classic/1.0 skin/
-overlay chrome://messenger/content/messenger.xul chrome://filter_button/content/filter_button.xul
-overlay chrome://global/content/customizeToolbar.xul chrome://filter_button/content/filter_button.xul
-overlay chrome://messenger/content/FilterEditor.xul chrome://filter_button/content/filter_editor_overlay.xul
-locale filter_button en-US chrome/locale/en-US/
-locale filter_button de-DE chrome/locale/de-DE/
\ No newline at end of file
+content		filter_button 					chrome/content/
+
+overlay 	chrome://messenger/content/messenger.xul 		chrome://filter_button/content/filter_button.xul
+overlay 	chrome://global/content/customizeToolbar.xul 	chrome://filter_button/content/filter_button.xul
+overlay 	chrome://messenger/content/FilterEditor.xul 	chrome://filter_button/content/filter_editor_overlay.xul
+
+skin 		filter_button 		classic/1.0 skin/
+
+locale 		filter_button 		en-US 		chrome/locale/en-US/
\ No newline at end of file
diff --git a/chrome/locale/en-EN/strings.properties b/chrome/locale/en-EN/strings.properties
new file mode 100644
index 0000000..2587c00
--- /dev/null
+++ b/chrome/locale/en-EN/strings.properties
@@ -0,0 +1,5 @@
+EmptyButtonLabel=No Filter
+MultipleFiltersButtonLabel=Filter...
+NoFilterTooltip=Create a manual filter for this message
+FilterTooltip=Run this filter on this message
+MultipleFiltersTooltip=Select a filter to run on this message
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
new file mode 100644
index 0000000..ece4270
--- /dev/null
+++ b/manifest.json
@@ -0,0 +1,14 @@
+{
+  "manifest_version": 2,
+  "name": "Filter Button",
+  "version": "1.2",
+  "description": "adds a Filter Button to the message toolbar",
+  "author": "Christoph Kaser, IconParc GmbH with modifications for TB 68.0 by Grzegorz Kubiak",
+  "legacy": true,
+  "applications": {
+    "gecko": {
+      "id": "filter_button@iconparc.de",
+	  "strict_min_version": "60.0"
+    }
+  }
+}
\ No newline at end of file