Document background image url issue in code

Author: Christoph Burgmer

dist/rasterizeHTML.allinone.js

@@ -1,4 +1,4 @@
-/*! rasterizeHTML.js - v0.4.1 - 2013-04-10
+/*! rasterizeHTML.js - v0.4.1 - 2013-05-25
 * http://www.github.com/cburgmer/rasterizeHTML.js
 * Copyright (c) 2013 Christoph Burgmer; Licensed MIT */
 
@@ -291,8 +291,14 @@ window.rasterizeHTMLInline = (function (module, window, CSSOM) {
         return getArrayForArrayLike(rules);
     };
 
+    var browserHasBackgroundImageUrlIssue = (function () {
+        // Checks for http://code.google.com/p/chromium/issues/detail?id=161644
+        var rules = rulesForCssTextFromBrowser('a{background:url(i)}');
+        return !rules.length || rules[0].cssText.indexOf('url()') >= 0;
+    }());
+
     module.css.rulesForCssText = function (styleContent) {
-        if (CSSOM.parse && window.navigator.userAgent.indexOf("Chrome") >= 0) {
+        if (browserHasBackgroundImageUrlIssue && CSSOM.parse) {
             return CSSOM.parse(styleContent).cssRules;
         } else {
             return rulesForCssTextFromBrowser(styleContent);

dist/rasterizeHTML.js

@@ -20,8 +20,14 @@ window.rasterizeHTMLInline = (function (module, window, CSSOM) {
         return getArrayForArrayLike(rules);
     };
 
+    var browserHasBackgroundImageUrlIssue = (function () {
+        // Checks for http://code.google.com/p/chromium/issues/detail?id=161644
+        var rules = rulesForCssTextFromBrowser('a{background:url(i)}');
+        return !rules.length || rules[0].cssText.indexOf('url()') >= 0;
+    }());
+
     module.css.rulesForCssText = function (styleContent) {
-        if (CSSOM.parse && window.navigator.userAgent.indexOf("Chrome") >= 0) {
+        if (browserHasBackgroundImageUrlIssue && CSSOM.parse) {
             return CSSOM.parse(styleContent).cssRules;
         } else {
             return rulesForCssTextFromBrowser(styleContent);