<img style="background: green" >
<script>
if (window.testRunner) {
    testRunner.dumpAsText(true);
    testRunner.waitUntilDone();
}

function loadAndStall()
{
    return "http://127.0.0.1:8000/resources/load-and-stall.py";
}

function pngImage()
{
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}

function testDone()
{
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}

function runTest()
{
    document.querySelector("img").src = loadAndStall() + pngImage() + "&stallAt=55297&stallFor=60";
    setTimeout(testDone, 500);
}

setTimeout(runTest, 0);
</script>