// JavaScript Document
// <![CDATA[
	var txt_sc;
	var pos;
	var pos_in;
	var alt;
	var ID;

function init()
{
	txt_sc=document.getElementById("roller_testo");
	pos=parseInt(txt_sc.style.top);
	pos_in=pos;
	alt=txt_sc.offsetHeight;
}
function rolla()
{
	txt_sc.style.top=pos+"px";
	if(pos==-alt)
		pos=pos_in;
	pos-=1;
}
function gira(){
	ID=setInterval("rolla()",45);
}
function ferma(){
	clearInterval(ID);
}
// ]]>