//#################################################
//Cambio immagine BIG
function ChangeImg(NomeImg)
{
document.images("ImgBig").src = NomeImg;
}

//#################################################
//Finestre Centrate
var win = null;
function NewWindow(mypage,myname,w,h,scroll){
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
settings =
'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable=false,menubar=0'
win = window.open(mypage,myname,settings)
if(win.window.focus){
	win.window.focus();
	return false;
	}
}

//#################################################
//Prelievo del file immagine TOP in modalità RANDOM
function get_random()
{
    var ranNum= Math.floor(Math.random()*21);
    return ranNum;
}

function getaFile()
{
   var whichFile=get_random();

    var NomeFile=new Array(20)
     NomeFile[0]="Index_top_01_1.jpg";
     NomeFile[1]="Index_top_01_2.jpg";
     NomeFile[2]="Index_top_01_3.jpg";   
     NomeFile[3]="Index_top_01_4.jpg";
     NomeFile[4]="Index_top_01_5.jpg";
     NomeFile[5]="Index_top_01_6.jpg";
     NomeFile[6]="Index_top_01_7.jpg";
     NomeFile[7]="Index_top_01_8.jpg";
     NomeFile[8]="Index_top_01_9.jpg";
     NomeFile[9]="Index_top_01_10.jpg";
     NomeFile[10]="Index_top_01_11.jpg";
     NomeFile[11]="Index_top_01_12.jpg";
     NomeFile[12]="Index_top_01_13.jpg";
     NomeFile[13]="Index_top_01_14.jpg";
     NomeFile[14]="Index_top_01_15.jpg";
     NomeFile[15]="Index_top_01_16.jpg";
     NomeFile[16]="Index_top_01_17.jpg";
     NomeFile[17]="Index_top_01_18.jpg";
     NomeFile[18]="Index_top_01_19.jpg";
     NomeFile[19]="Index_top_01_20.jpg";
     NomeFile[20]="Index_top_01_21.jpg";
  
   var FileScelto = (NomeFile[whichFile]);
   return FileScelto;
  }

//##################################################
//Timer per il prelievo Ciclico di File Immagine TOP
var secs
var timerID = null
var timerRunning = false
var delay = 1000

function InitializeTimer()
{
	
	//Imposto l'immagine TOP da visualizzate.
	document.images("ImgTop").src = "images/"+getaFile();

    // Set the length of the timer, in seconds
    secs = 5
    StopTheClock()
    StartTheTimer()
}

function StopTheClock()
{
    if(timerRunning)
        clearTimeout(timerID)
    timerRunning = false
}

function StartTheTimer()
{
    if (secs==0)
    {
        StopTheClock()
        InitializeTimer()
    }
    else
    {
        secs = secs - 1
        timerRunning = true
        timerID = self.setTimeout("StartTheTimer()", delay)
    }
}