Delayed redirect help

I have a site that I have a delayed redirect on. It is here - http://zeeb44.com

I have it redirect to the #about anchor after three seconds. I am wondering how that can be modified so it will scroll with “ease”. An example is when you click on a link at the top. The scrolling effect from section to section. I want that effect to happen when the delay redirect happens. Any help?


<script type="text/javascript">
function delayedRedirect(){
    window.location = "#about"
}
</script>


<body onLoad="setTimeout('delayedRedirect()', 3000)">

See the following demo http://jsfiddle.net/chrisupjohn/qApZM/

Greatly appreciated. Thanks!