//===== relative URL handling code for js files ================
sWZBaseFolder = "www.teonline.it/test/";                          
sWZ = window.location.href;                                     
iWZ = sWZ.indexOf(sWZBaseFolder) + sWZBaseFolder.length + 1;    
sWZBase = sWZ.substring(0,iWZ);                                 
//===== Copyright © 2001 Spidersoft. All rights reserved. ======

var arrimg=new Array('images/foto_testa_1.jpg','images/foto_testa_2.jpg','images/foto_testa_3.jpg');
var imgvalide=8;
var intervall=6;//sec
var timeoutID=0;
var nwimg;
function randomize_my_number(min_value,max_value)
{
var valres=Math.round(Math.random() * (parseFloat(max_value)-(parseFloat(min_value)))) + parseFloat(min_value) 
return valres;
}
function cambia_immagine()
{
var newvalue=randomize_my_number(0,imgvalide);
nwimg=new Image();
nwimg.onload=cambia_src;
nwimg.onerror=cambia_img;
nwimg.src=arrimg[newvalue];
}
function cambia_src(theImage)
{
var x=document.getElementById("imgtop");
if ((x!=null)&&(typeof x.src !="undefined"))
	{
	x.src=nwimg.src;
	void cambia_img();
	}
}
function cambia_img()
{
if (timeoutID!=0) clearTimeout(timeoutID);
timeoutID=setTimeout ("cambia_immagine()",(intervall*1000));
}