function scroller(target) 
{
  if(target == 'none')
    return 0;
	var offsetNow = 1;
	var targetOffset = $('#'+target).offset().top; 
	var duration = 1;

	offsetNow = document.documentElement.scrollTop || document.body.scrollTop;

	duration = Math.abs(offsetNow-targetOffset) * duration;

	if($.browser.opera)
  {
		$('html').animate({scrollTop: $('#'+target).offset().top}, duration, 'linear');
  } 
  else 
    $('html,body').animate({scrollTop: $('#'+target).offset().top}, duration, 'linear');
}