<!DOCTYPE html>
<style>
#transformed {
    width: 100px;
    height: 100px;
    background-color: green;
    transform: translateY(0);
}
</style>
<div id="transformed">
</div>
<script>
    document.body.offsetTop;

    var transformed = document.getElementById('transformed');
    transformed.style.transform = "translateY(1000px)";

    if (window.eventSender)
        eventSender.keyDown("end");
</script>