var x = 0
	var xx=0
	var iebody=(document.compatMode && document.compatMode != "BackCompat")? document.documentElement : document.body
	var sessione = null
	function muovi(elemento,fattore)
	{
		x=x+40
		y=(getPosX(document.getElementById(elemento)) -40)
		window.scrollBy(40,0)
		if (x >= y)
			clearInterval(sessione)
	}
	
	function returna()
	{
		window.scrollBy(-40,0)
		xx=(window.pageXOffset)?window.pageXOffset:iebody.scrollLeft;
		if (xx <= 0)
			clearInterval(sessione)
	}
	
function getPosX(obj) 
{
  var curleft = 0;
  if (obj.offsetParent) 
  {
    while (obj.offsetParent) 
    {
      curleft += obj.offsetLeft
      obj = obj.offsetParent;
    }
  }
  else if (obj.x)
  curleft += obj.x;
  return curleft;
}