<body>
<p>This is a regression test for https://bugs.webkit.org/show_bug.cgi?id=50434. It verifies that a marquee does not animate when scrollAmount is set to 0 by script.</p>
<script>
if (window.testRunner)
    testRunner.waitUntilDone();

onload = function()
{
    var marquee = document.createElement("marquee");
    marquee.innerHTML = "Test";
    marquee.width = "100px";
    // We need a non-zero scroll delay and amount for marquee timer to start.
    marquee.scrollAmount = 6;
    marquee.scrollDelay = 100000;
    document.body.appendChild(marquee);
    // Force layout now, so that marquee starts its timer.
    marquee.offsetTop;
    // Verify that changing scrollAmount to 0 actually stops the marquee (the bug
    // was that starting with 0 worked correctly, but changing to 0 did not).
    marquee.scrollAmount = 0;
    // Set the delay to a very low value, so that scrolling would have occured before notifyDone() if not stopped.
    marquee.trueSpeed = true;
    marquee.scrollDelay = 1;
    if (window.testRunner) {
        setTimeout(function() {
            testRunner.notifyDone();
        }, 10);
    }
}
</script>