var slideTime = 1000, topMargin;

window.onload = function()
{
  topMargin = 0;
  winOnResize(); // set initial position
  xAddEventListener(window, 'resize', winOnResize, false);
  xAddEventListener(window, 'scroll', winOnScroll, false);
  return;
}

function winOnResize()
{
  xMoveTo('floater2', 0, topMargin);
  xShow('floater2');
  winOnScroll(); // initial slide
}

function winOnScroll()
{
  if (xClientHeight() > 450)
  {
  	if (xScrollTop() > 200)
  	{
  		var desplazamiento = xScrollTop() - 200;
  	}
  	else
  	{
  		var desplazamiento = 0;
  	}
    xSlideTo('floater2', xLeft('floater2'), desplazamiento + topMargin, slideTime);
  }
}