automatic move to bottom on refresh

i have a page that is in an iframe that is refreshed every 5 seconds. i want this page to automatically go to the bottom of the page every refresh. i tried anchors but i couldnt get it to work. what is the normal way to do this?

Add this to the body tag of the page being iframed in.
onload="window.scrollTo(0,document['body'].offsetHeight)"

awesome thanks, that worked beautifully. :D