<!DOCTYPE HTML> <html class="reftest-wait"> <body> <video id="v1" style="position:absolute; left:0; top:0"></video> <!-- hide bottom of video --> <div style="position:absolute; top:120px; left:0; right:0; bottom:0; background:black"></div> <script> function doTest() { // Set source now so that the loadeddata event can't fire before // this function runs. v1.src = "seek420.ogv"; v1.play(); v1.addEventListener("loadeddata", function() { setTimeout(function() { document.documentElement.removeAttribute('class'); }, 50); }); } document.addEventListener("MozReftestInvalidate", doTest, false); </script>