diff --git a/mozilla/testing/tests/l10n/web/code-base.js b/mozilla/testing/tests/l10n/web/code-base.js
index ae50822c5fe..483b97131d5 100755
--- a/mozilla/testing/tests/l10n/web/code-base.js
+++ b/mozilla/testing/tests/l10n/web/code-base.js
@@ -101,12 +101,7 @@ JSON_c.prototype = {
     }
   },
   handleFailure : function(o) {
-    if (o.callback) {
-      o.callback.handleFailure();
-      delete o.callback;
-      return;
-    }
-    throw("load failed with " + o.status + " " + o.statusText);
+    YAHOO.widget.Logger("load failed with " + o.status + " " + o.statusText);
   }
 };
 var JSON = new JSON_c();
@@ -262,6 +257,44 @@ baseController = {
   showView: function(aClosure) {
     view.updateView(controller.locales, aClosure);
   },
+  showLog: function(aTag, aLocale) {
+    var _t = this;
+    var dlgProps = { xy: ["1em", "1em"], height: "40em", width: "40em",
+                     modal:true, draggable:false }
+    var dlg = new YAHOO.widget.SimpleDialog("log-dlg", dlgProps);
+    var prefix = '';
+    if (aLocale) {
+      prefix  = '[' + aLocale * '] ';
+    }
+    dlg.setHeader(prefix + 'build log, ' + aTag);
+    dlg.setBody('Loading …');
+    var okButton = {
+      text: 'OK',
+      handler: function(){
+        this.hide();
+        this.destroy()
+      },
+      isDefault: true
+    };
+    dlg.cfg.queueProperty("buttons", [okButton]);
+    dlg.render(document.body);
+    dlg.moveTo(10, 10);
+    var callback = function(obj) {
+      _t.handleLog.apply(_t, [obj, dlg, aLocale]);
+    };
+    JSON.get('results/' + aTag + '/buildlog.json', callback);
+  },
+  handleLog: function(aLog, aDlg, aLocale) {
+    var df = document.createDocumentFragment();
+    for each (var r in aLog) {
+      var d = document.createElement('pre');
+      d.className = 'log-row ' + r[1];
+      // XXX filter on r[0:1]
+      d.textContent = r[2].replace(/[\n\r]$/, '');
+      df.appendChild(d);
+    }
+    aDlg.setBody(df);
+  },
   getContent: function(aLoc) {
     if (! this._target) return;
     return this._c[this._target].getContent(aLoc);
diff --git a/mozilla/testing/tests/l10n/web/layout.css b/mozilla/testing/tests/l10n/web/layout.css
index c172784bf61..b522647e44a 100755
--- a/mozilla/testing/tests/l10n/web/layout.css
+++ b/mozilla/testing/tests/l10n/web/layout.css
@@ -114,6 +114,17 @@ div.calbordered {
   float: none;
 }
 
+/* waterfall view */
+#log-dlg {
+  overflow: scroll;
+}
+.log-row {
+  margin: 0pt;
+}
+.ERROR {
+  background-color: coral;
+}
+
 /* search view */
 
 td.ordered {border: 2px solid black;}
diff --git a/mozilla/testing/tests/l10n/web/waterfall-code.js b/mozilla/testing/tests/l10n/web/waterfall-code.js
index e155b7c083e..b1c4aa34e68 100755
--- a/mozilla/testing/tests/l10n/web/waterfall-code.js
+++ b/mozilla/testing/tests/l10n/web/waterfall-code.js
@@ -54,6 +54,14 @@ var waterfallView = {
       head.appendChild(h);
     }
     var heads = head.childNodes;
+    var lastDate = -1;
+    function pad(aNumber, length) {
+      str = String(aNumber);
+      while (str.length < length) {
+        str = '0' + str;
+      }
+      return str;
+    };
     for (var i = aResult.length - 1; i >= 0; i--) {
       var wf = document.createElement('tr');
       wf.className = 'waterfall-row';
@@ -65,7 +73,15 @@ var waterfallView = {
       wf.setAttribute('style', style);
       var cell = view.getCell();
       cell.className = 'cell-label';
-      cell.textContent = b[0];
+      var d = this.getUTCDate(b[0]);
+      var label = pad(d.getUTCHours(), 2) + ':' +
+        pad(d.getUTCMinutes(), 2);
+      if (lastDate != d.getUTCDate()) {
+        lastDate = d.getUTCDate();
+        label = d.getUTCDate() +'/'+ (d.getUTCMonth()+1) + '<br>' + label;
+      }
+      cell.innerHTML = label +
+        '<br><a href="javascript:controller.showLog(\'' + b[0] + '\');">L</a>';
       wf.appendChild(cell);
       var locs = keys(b[2]);
       var h = 1;
@@ -122,6 +138,14 @@ var waterfallView = {
     _t = this;
   },
   destroyHandlers: function() {
+  },
+  // Helper functions
+  getUTCDate: function(aTag) {
+    var D = new Date();
+    var d = aTag.split(/[ -]/).map(function(aEl){return Number(aEl);});
+    d[1] -= 1; // adjust month
+    D.setTime(Date.UTC.apply(null,d));
+    return D;
   }
 };
 var waterfallController = {