javascript 自动转到命名锚记

<script laguage="javascript">
window.location.hash = "#bottom";
</script>
<a name="bottom">底部</a>

<script laguage="javascript">
<!--
//function scrollwin() {
//document.body.scrollTop
var scroll_y = parseInt(1000);
window.scrollBy(0, scroll_y);
//}
//-->
</script>