From 9b0c32c62c1903858c8860f1ac587888349afa9e Mon Sep 17 00:00:00 2001
From: Niklas von Hertzen <niklasvh@gmail.com>
Date: Fri, 11 Jan 2013 20:36:07 +0200
Subject: [PATCH] Fix firefox pseudoelement bug for images

---
 src/Preload.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Preload.js b/src/Preload.js
index 1313334..e49d84f 100644
--- a/src/Preload.js
+++ b/src/Preload.js
@@ -276,7 +276,7 @@ _html2canvas.Preload = function( options ) {
 
   function getPseudoElement(el, which) {
     var elStyle = window.getComputedStyle(el, which);
-    if(!elStyle || !elStyle.content || elStyle.content === "none") { return; }
+    if(!elStyle || !elStyle.content || elStyle.content === "none" || elStyle.content === "-moz-alt-content") { return; }
     var content = elStyle.content + '',
     first = content.substr( 0, 1 );
     //strips quotes