From 1398457f7aebaff793aba640cd2187d540833418 Mon Sep 17 00:00:00 2001
From: MoyuScript <i@moyu.moe>
Date: Mon, 20 Jan 2014 22:42:58 +0200
Subject: [PATCH] Cache backgroundImages request for nodes

---
 src/nodecontainer.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/nodecontainer.js b/src/nodecontainer.js
index 3468eb9..8ec9241 100644
--- a/src/nodecontainer.js
+++ b/src/nodecontainer.js
@@ -6,6 +6,7 @@ function NodeContainer(node, parent) {
     this.visible = null;
     this.computedStyles = null;
     this.styles = {};
+    this.backgroundImages = null;
 }
 
 NodeContainer.prototype.assignStack = function(stack) {
@@ -143,5 +144,5 @@ NodeContainer.prototype.parseBackgroundImages = function() {
 
     appendResult();
 
-    return results;
+    return this.backgroundImages || (this.backgroundImages = results);
 };