<!DOCTYPE html>
<style>
ul { text-align: center }
ul.left { text-align: left }
</style>
<ul id="uList">
<li>This text should not be centered</li>
</ul>
<script>
uList.offsetTop;
uList.className = "left";
</script>
<!DOCTYPE html>
<style>
ul { text-align: center }
ul.left { text-align: left }
</style>
<ul id="uList">
<li>This text should not be centered</li>
</ul>
<script>
uList.offsetTop;
uList.className = "left";
</script>