<!DOCTYPE HTML>
<style>
body {
    margin: 0;
}
#test {
    position: absolute;
    background-color: green;
    top: 0;
    right: 0;
    bottom: 0;
    -webkit-writing-mode:vertical-rl;
}
</style>
<script src="../../../resources/check-layout.js"></script>
<script>
function runTest()
{
    var test = document.getElementById('test');
    document.body.offsetTop;
    test.style['left'] = '50%';
    document.body.offsetTop;
    test.style['left'] = 'auto';
    window.checkLayout("#test");
}
window.onload = runTest;
</script>
Tests positioned movement layout when its height is changed by top/bottom changing from auto to fixed and back again.
<div id="test" data-expected-width=0></div>