ratings column

content.js

@@ -0,0 +1,18 @@
+var elements = document.getElementsByClassName('rwd-table results');
+var table = elements[0];
+var header = table.tHead.children[0];
+
+var th = document.createElement('th');
+th.innerHTML = "Rating";
+header.insertBefore(th,header.children[5]);
+
+var tableBody = table.getElementsByTagName('tbody')[0];
+tr = tableBody.getElementsByTagName("tr");
+for (i = 0; i < tr.length; i++) {
+		if(!(tr[i].children.length == 1)){
+		var td = document.createElement('td');
+		var newContent = document.createTextNode(Math.random()); 
+		td.appendChild(newContent);
+		tr[i].insertBefore(td,tr[i].children[5]);
+	}
+}

manifest.json

@@ -9,6 +9,9 @@
     "css": ["styles.css"],
     "js": ["content.js"],
     "matches": ["https://utdirect.utexas.edu/apps/registrar/course_schedule/*"]
-  }]
+  }],
- 
+  "background": {
+		"scripts": ["content.js"],
+		"persistent": false
+	}
 }