diff --git a/content-scripts/content-script.js b/content-scripts/content-script.js
new file mode 100644
index 0000000..aa314a4
--- /dev/null
+++ b/content-scripts/content-script.js
@@ -0,0 +1,28 @@
+chrome.runtime.onMessage.addListener(handleMessage);
+  
+function handleMessage(request, sender, sendResponse) {
+  switch(request.name) {
+    case "highlight-para":
+      highlightPara();
+    case "show-foo":
+      showFoo();
+    case "show-confirm":
+      showConfirm();
+    }
+  }
+
+function highlightPara() {
+
+}
+
+
+function beastNameToURL(beastName) {
+  switch (beastName) {
+    case "Frog":
+      return chrome.extension.getURL("beasts/frog.jpg");
+    case "Snake":
+      return chrome.extension.getURL("beasts/snake.jpg");
+    case "Turtle":
+      return chrome.extension.getURL("beasts/turtle.jpg");
+  }
+}
diff --git a/content-scripts/manifest.json b/content-scripts/manifest.json
new file mode 100644
index 0000000..48917da
--- /dev/null
+++ b/content-scripts/manifest.json
@@ -0,0 +1,20 @@
+{
+
+  "manifest_version": 2,
+  "name": "Content scripting",
+  "version": "1.0",
+
+  "applications": {
+    "gecko": {
+      "id": "content-scripts@mozilla.org"
+    }
+  },
+
+  "content_scripts": [
+    {
+      "matches": ["https://mdn.github.io/webextensions-examples/"],
+      "js": ["content-script.js"]
+    }
+  ]
+
+}