scrollTop: is not working in chrome?

scrollTop: is not working in chrome?

http://sabithacreations.com/

in this site i used

  1. var about = $('.about');
  2. var aboutScroll = $('.abt_part').position().top + $('.show_icons').position().top ;
  3. about.click( function(){ $('html').animate({scrollTop: aboutScroll },'slow');
  4.  return false; })
in mozilla its working as i intended but not in chrome...pls help