From 260ff6de3e4fa9638c5fbc968275d255788d7c2a Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Sun, 19 Aug 2012 15:35:38 -0700
Subject: [PATCH] Avoid using the nano applet in perf/index.html if it isn't
 needed.

Former-commit-id: 342983337140dd5608848b7f09d24038ea61d1a1
---
 perf/index.html | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/perf/index.html b/perf/index.html
index 1427bb46f..b53f458a8 100644
--- a/perf/index.html
+++ b/perf/index.html
@@ -27,8 +27,23 @@
 		<script src="perf.js"></script>
 		<script>
 			(function() {
-				var useApplet = !/[?&]nojava=true(?:&|$)/.test(location.search);
+				if (/[?&]nojava=true(?:&|$)/.test(location.search)) {
+					return;
+				}
+				var measured,
+				    perfNow,
+				    begin = new Date;
 
+				// is the applet really needed?
+				while (!(measured = new Date - begin)) { }
+				if (measured != 1 && !((perfNow = window.performance) && typeof (perfNow.webkitNow || perfNow.now) == 'function')) {
+					// load applet
+					document.write('<applet code="nano" archive="../vendor/benchmark.js/nano.jar"></applet>');
+				}
+			}());
+		</script>
+		<script>
+			(function() {
 				function init() {
 					var fbUI = document.getElementById('FirebugUI'),
 					    fbDoc = fbUI && (fbDoc = fbUI.contentWindow || fbUI.contentDocument).document || fbDoc,
@@ -38,16 +53,7 @@
 						return setTimeout(init, 15);
 					}
 					fbUI.style.height = fbDoc.body.style.height = fbDoc.documentElement.style.height = '100%';
-
-					// give applet time to initialize
-					lodash.delay(run, useApplet ? 500 : 15);
-				}
-
-				if (useApplet) {
-					// using innerHTML avoids an alert in some versions of IE6
-					var div = document.createElement('div');
-					div.innerHTML = '<applet code=nano archive="../vendor/benchmark.js/nano.jar">';
-					document.body.insertBefore(div.lastChild, document.body.firstChild);
+					setTimeout(run, 15);
 				}
 
 				window.onload = init;