JQuery :: How To Make Scrollbar Move To Bottom Of DIV

My div has this CSS on it:
{height:300px;overflow-y:scroll;overflow-x:hidden;}

After loading some content with append() I want the scrollbar to move to the bottom of the div so the last row of the recently added content is visible, as if the user had moved the scrollbar to the bottom manually. I have tried all the obvious solutions:
//lets assume I've got the height as vHeight from scrollHeight and it equals 800
$(elem).scrollTop(vHeight);
$(elem).attr('scrollTop',vHeight);
$(elem).animate({scrollTop: 800}, 'slow');

None works. I also tried using the DOM as in
document.getElementById('elemId').scrollTop = vHeight.
Nothing sets the scrollTop property.