var global_id;
var global_stop;
var global_autoplay;
var countingAutoplay;
var arr_preload = new Array();

function avanti()
{
	var main_image;
	global_id++;
	main_image = document.getElementById('main_image');
	if (arr_preload[global_id])
	{
		main_image.src = arr_preload[global_id].src;
	}
	var testo;
	testo = document.getElementById('testo');
	if (arr_testo[global_id] != '')
	{
		testo.innerHTML = arr_testo[global_id];
	}
	else
	{
		testo.style.display = 'none';
	}
	var cmd_avanti;
	var cmd_autoplay;
	cmd_avanti = document.getElementById('cmd_avanti');
	cmd_autoplay = document.getElementById('cmd_autoplay');
	if (global_id == (arr_preload.length - 1))
	{
		cmd_avanti.style.display = 'none';
	}
	else
	{
		cmd_avanti.style.display = 'inline';
	}
	var cmd_indietro;
	cmd_indietro = document.getElementById('cmd_indietro');
	cmd_indietro.style.display = 'inline';
	var cmd_go;
	cmd_go = document.getElementById('autoplay_go');
	cmd_go.style.display = 'inline';
	var cmd_stop;
	cmd_stop = document.getElementById('autoplay_stop');
	cmd_stop.style.display = 'none';
	return false;
}

function indietro()
{
	var main_image;
	global_id = global_id - 1;
	main_image = document.getElementById('main_image');
	if (arr_preload[global_id])
	{
		main_image.src = arr_preload[global_id].src;
	}
	var testo;
	testo = document.getElementById('testo');
	if (arr_testo[global_id] != '')
	{
		testo.innerHTML = arr_testo[global_id];
	}
	else
	{
		testo.style.display = 'none';
	}
	var cmd_indietro;
	cmd_indietro = document.getElementById('cmd_indietro');
	if (global_id == 0)
	{
		cmd_indietro.style.display = 'none';
	}
	else
	{
		cmd_indietro.style.display = 'inline';
	}
	var cmd_avanti;
	cmd_avanti = document.getElementById('cmd_avanti');
	cmd_avanti.style.display = 'inline';
	var cmd_autoplay;
	cmd_autoplay = document.getElementById('cmd_autoplay');
	cmd_autoplay.style.display = 'inline';
	var cmd_go;
	cmd_go = document.getElementById('autoplay_go');
	cmd_go.style.display = 'inline';
	var cmd_stop;
	cmd_stop = document.getElementById('autoplay_stop');
	cmd_stop.style.display = 'none';
	return false;
}


function stop_autoplay ()
{
	if (countingAutoplay > 0) global_id = global_id - 1; 
	global_stop = true; 
	var cmd_go;
	cmd_go = document.getElementById('autoplay_go');
	cmd_go.style.display = 'inline';
	var cmd_stop;
	cmd_stop = document.getElementById('autoplay_stop');
	cmd_stop.style.display = 'none';
	var cmd_avanti;
	cmd_avanti = document.getElementById('cmd_avanti');
	var cmd_indietro;
	cmd_indietro = document.getElementById('cmd_indietro');
	if (global_id == -1)
	{
		cmd_avanti.style.display = 'none';
		global_id = arr_preload.length - 1;
	}
	else
	{ 
		cmd_avanti.style.display = 'inline';
	}	
	if (global_id == 0)
	{
		cmd_indietro.style.display = 'none';
	}
	else
	{ 
		cmd_indietro.style.display = 'inline';
	}	
	return false;
}

function autoplay()
{
	global_autoplay = true;
	if (global_stop == false)
	{
		countingAutoplay++; 
		var main_image;
		main_image = document.getElementById('main_image');
		if (arr_preload[global_id])
		{
			main_image.src = arr_preload[global_id].src;
		}
		var testo;
		testo = document.getElementById('testo');
		if (arr_testo[global_id] != '')
		{
			testo.innerHTML = arr_testo[global_id];
		}
		else
		{
			testo.style.display = 'none';
		}
		var cmd_go;
		cmd_go = document.getElementById('autoplay_go');
		cmd_go.style.display = 'none';
		var cmd_stop;
		cmd_stop = document.getElementById('autoplay_stop');
		cmd_stop.style.display = 'inline';
		var cmd_avanti;
		cmd_avanti = document.getElementById('cmd_avanti');
		cmd_avanti.style.display = 'none';
		var cmd_indietro;
		cmd_indietro = document.getElementById('cmd_indietro');
		cmd_indietro.style.display = 'none';
		if (global_id == (arr_preload.length - 1)) global_id = -1
		setTimeout("autoplay();",5000)
		global_id++;
	}
	global_stop = false; 
	return false;
}


/*
function avanti() {
	var main_image;
	global_id++;
	main_image = document.getElementById('main_image');
	if (arr_preload[global_id]) 
	{
		main_image.src = arr_preload[global_id].src;
	}
	var cmd_avanti;
	var cmd_autoplay;
	cmd_avanti = document.getElementById('cmd_avanti');
	cmd_autoplay = document.getElementById('cmd_autoplay');
	if (global_id == 5) 
	{
		cmd_avanti.style.display = 'none';
	} 
	else 
	{
		cmd_avanti.style.display = 'inline';
	}
	var cmd_indietro;
	cmd_indietro = document.getElementById('cmd_indietro');
	cmd_indietro.style.display = 'inline';
	var cmd_go;
	cmd_go = document.getElementById('autoplay_go');
	cmd_go.style.display = 'inline';
	var cmd_stop;
	cmd_stop = document.getElementById('autoplay_stop');
	cmd_stop.style.display = 'none';
	return false;
}

function indietro() {
	var main_image;
	global_id = global_id - 1;
	main_image = document.getElementById('main_image');
	if (arr_preload[global_id]) 
	{
		main_image.src = arr_preload[global_id].src;
	}
	var cmd_indietro;
	cmd_indietro = document.getElementById('cmd_indietro');
	if (global_id == 0) 
	{
		cmd_indietro.style.display = 'none';
	} 
	else 
	{
		cmd_indietro.style.display = 'inline';
	}
	var cmd_avanti;
	cmd_avanti = document.getElementById('cmd_avanti');
	cmd_avanti.style.display = 'inline';
	var cmd_autoplay;
	cmd_autoplay = document.getElementById('cmd_autoplay');
	cmd_autoplay.style.display = 'inline';
	var cmd_go;
	cmd_go = document.getElementById('autoplay_go');
	cmd_go.style.display = 'inline';
	var cmd_stop;
	cmd_stop = document.getElementById('autoplay_stop');
	cmd_stop.style.display = 'none';
	return false;
}



function stop_autoplay() {
	if (countingAutoplay > 0) global_id = global_id - 1; 
	global_stop = true; 
	var cmd_go;
	cmd_go = document.getElementById('autoplay_go');
	cmd_go.style.display = 'inline';
	var cmd_stop;
	cmd_stop = document.getElementById('autoplay_stop');
	cmd_stop.style.display = 'none';
	var cmd_avanti;
	cmd_avanti = document.getElementById('cmd_avanti');
	var cmd_indietro;
	cmd_indietro = document.getElementById('cmd_indietro');
	if (global_id == -1) 
	{
		cmd_avanti.style.display = 'none';
		global_id = 5;
	} 
	else 
	{ 
		cmd_avanti.style.display = 'inline';
	}	
	if (global_id == 0) 
	{
		cmd_indietro.style.display = 'none';
	} 
	else 
	{ 
		cmd_indietro.style.display = 'inline';
	}	
	return false;
}

function autoplay() {
global_autoplay = true;
	if (global_stop == false) 
	{
		countingAutoplay++; 
		var main_image;
		main_image = document.getElementById('main_image');
		if (arr_preload[global_id]) 
		{
			main_image.src = arr_preload[global_id].src;
		}
		var cmd_go;
		cmd_go = document.getElementById('autoplay_go');
		cmd_go.style.display = 'none';
		var cmd_stop;
		cmd_stop = document.getElementById('autoplay_stop');
		cmd_stop.style.display = 'inline';
		var cmd_avanti;
		cmd_avanti = document.getElementById('cmd_avanti');
		cmd_avanti.style.display = 'none';
		var cmd_indietro;
		cmd_indietro = document.getElementById('cmd_indietro');
		cmd_indietro.style.display = 'none';
		if (global_id == 5) global_id = -1
		setTimeout("autoplay();",8000)
		global_id++;
	}
	global_stop = false; 
	return false;
}
*/