<html>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

window.onload = function()
{
    if (location.hash == "#2") {
        document.body.innerHTML = "PASSED: Duplicate webkit-canvas styles removed without crash.";
        if (window.testRunner)
            testRunner.notifyDone();
    } else {
        if (location.hash)
            location.hash = "#" + (parseInt(location.hash.slice(1)) + 1).toString();
        else
            location.hash = "#1";

        iframe = document.body.appendChild(document.createElement('iframe'));
        element1 = document.createElement('a');
        iframe.contentDocument.body.appendChild(element1);
        element1.style.setProperty('background', '-webkit-canvas(canvas)');

        element2 = document.createElement('a');
        iframe.contentDocument.body.appendChild(element2);  
        element2.style.setProperty('background', '-webkit-canvas(canvas)');  

        element1.textContent = element2.textContent = 1;
        setTimeout(removeElements, 0);
    }
}

function removeElements()
{ 
    iframe.contentDocument.body.removeChild(element1);
    document.adoptNode(element1);

    iframe.contentDocument.body.removeChild(element2);
    document.adoptNode(element2);  

    document.body.removeChild(iframe);
    delete iframe;

    var timeout = 50;
    if (window.GCController)
        window.GCController.collect();
    else if (window.gc)
        gc();
    else
        timeout = 400;
    setTimeout(finishTest, timeout);
}

function finishTest()
{
    document.body.appendChild(element1);
    setTimeout(function () { location.reload() }, 0);
}

</script>
</html>