<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <!DOCTYPE html> <html lang="en" class="reftest-wait"> <meta charset="utf-8"> <title>Make sure that repeated background images are painted even at extreme scroll positions</title> <!-- See https://bugzilla.mozilla.org/show_bug.cgi?id=671302 --> <style> html { background-image: url(green-8x20-blue-8x20-vertical.png); overflow: hidden; } html, body { margin: 0; } body { height: 100000px; } div { height: 1000px; background-color: red; } </style> <div></div> <script> window.addEventListener("MozReftestInvalidate", function () { document.documentElement.scrollTop = 16 * 3000; // = 48000 > 32768 document.documentElement.removeAttribute("class"); }); </script>