From e111ea2aa5e4f587cf7f39a15290069e920b080c Mon Sep 17 00:00:00 2001
From: Tom MacWright <tom@macwright.org>
Date: Thu, 17 Jan 2013 12:22:11 -0500
Subject: [PATCH] Gracefully handle Opera, which does not support
 pointer-events

---
 js/lib/d3.tail.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/js/lib/d3.tail.js b/js/lib/d3.tail.js
index 00627de0a..8046e4a96 100644
--- a/js/lib/d3.tail.js
+++ b/js/lib/d3.tail.js
@@ -22,6 +22,9 @@ d3.tail = function() {
                 .on('mouseover.tail', mouseover)
                 .on('mouseout.tail', mouseout);
 
+            container
+                .on('mousemove.tail', mousemove);
+
             selection_size = selection.size();
 
         }
@@ -36,11 +39,13 @@ d3.tail = function() {
         }
 
         function mouseout() {
-            if (text !== false) container.style('display', 'none');
+            if (d3.event.relatedTarget !== container.node() &&
+                text !== false) container.style('display', 'none');
         }
 
         function mouseover() {
-            if (text !== false) container.style('display', 'block');
+            if (d3.event.relatedTarget !== container.node() &&
+                text !== false) container.style('display', 'block');
         }
 
         if (!container) setup();