diff --git a/server/static/scripts/controllers/builds.js b/server/static/scripts/controllers/builds.js
index c05b0ed3..1c0707dd 100644
--- a/server/static/scripts/controllers/builds.js
+++ b/server/static/scripts/controllers/builds.js
@@ -75,13 +75,14 @@
 	/**
 	 * BuildCtrl responsible for rendering a build.
 	 */
-	function BuildCtrl($scope, $routeParams, logs, builds, repos, users, feed) {
+	function BuildCtrl($scope, $routeParams, $window, logs, builds, repos, users, feed) {
 
 		var step = parseInt($routeParams.step) || 1;
 		var number = $routeParams.number;
 		var owner = $routeParams.owner;
 		var name  = $routeParams.name;
 		var fullName = owner+'/'+name;
+		var tail = false;
 
 		// Initiates streaming a build.
 		var stream = function() {
@@ -89,8 +90,13 @@
 			var term = document.getElementById("term");
 			term.innerHTML = "";
 
+			// subscribes to the build otuput.
 			logs.subscribe(fullName, number, step, function(data){
 				term.innerHTML += convert.toHtml(data)+"\n";
+				if (tail) {
+					// scrolls to the bottom of the page if enabled
+					$window.scrollTo(0, $window.document.body.scrollHeight);
+				}
 			});
 		}
 
@@ -149,6 +155,10 @@
 			});
 		};
 
+		$scope.tail = function() {
+			tail = !tail;
+		};
+
 		feed.subscribe(function(event) {
 			if (event.repo.full_name !== fullName) {
 				return; // ignore
diff --git a/server/static/scripts/views/build.html b/server/static/scripts/views/build.html
index 85668d05..0d141216 100644
--- a/server/static/scripts/views/build.html
+++ b/server/static/scripts/views/build.html
@@ -57,7 +57,8 @@
 
 <hr>
 
-<pre id="term">{{ logs }}</pre>
+<button ng-if="build.state === 'running'" ng-click="tail()">(un)Follow</button>
+<pre id="term" ng-if="build.state !== 'pending'">{{ logs }}</pre>
 
 <table border="1">
 	<thead>