ScrollTo with animation

Question

how can i add an easing/animation/slowly moving to this function? At the moment it just jumps. Now it should move to the "anchor" with an animation.

<script type='text/javascript'>
        setTimeout("window.scrollBy(0,270);",3000);
</script>

Answer 1

got it myself. because of wordpress and the jquery.noConflict Mode i hade to modify the code:

<script type="text/javascript">
        (function($){
        $(document).ready(function(){
            setTimeout(function() {
            $('body').scrollTo( '300px', 2500 );
        }, 3000);
        });
        }(jQuery));
</script>

thanks for everybody!!!