diff --git a/static/script.js b/static/script.js
index cdbc9eb..559ab3d 100644
--- a/static/script.js
+++ b/static/script.js
@@ -12,7 +12,7 @@ function configureSummarizeButtons() {
         e.preventDefault();
         e.stopPropagation();
         if (target.href) {
-          summarizeButtonClick(target.href, target);
+          summarizeButtonClick(button);
         }
         break;
       }
@@ -20,21 +20,43 @@ function configureSummarizeButtons() {
   }, false);
 }
 
-function summarizeButtonClick(url, button) {
+function summarizeButtonClick(button) {
+  var url = button.href;
+  var loadingMsg = button.dataset.loading;
+  var errorMsg = button.dataset.error;
   var container = button.parentNode;
 
+  container.classList.add('alert');
+  container.classList.add('alert-warning');
+  container.innerHTML = loadingMsg;
+
   var request = new XMLHttpRequest();
   request.open('POST', url, true);
   request.responseType = 'json';
 
   request.onload = function(e) {
     if (this.status != 200) {
+      return request.onerror(e);
     }
+
+    var response = xmlHttpRequestJson(this);
+    if (!response) {
+      return request.onerror(e);
+    }
+
+    if (response.status !== 200) {
+      return request.onerror(e);
+    }
+
+    container.classList.remove('alert-warning');
+    container.classList.add('alert-success');
+    container.innerHTML = 'placeholder';
   }
 
   request.onerror = function(e) {
     badAjax(this.status == 403);
-    container.classList.add('alert');
+    container.classList.remove('alert-warning');
     container.classList.add('alert-error');
+    containter.innerHTML = errorMsg;
   }
 }