function changeNavigator(nav)
{
	total = config['total'] - 1;
	
	if(nav == "next" || nav == "")
		if(total == config['current'])
			config['current'] = 0;
		else
			config['current'] += 1;
	else
		if(config['current'] == 0)
			config['current'] = total;
		else
			config['current'] -= 1;
		
	objData = eval("img_" + config['current']);
	obj1 = document.getElementById('link').href = objData.lnk;
	obj2 = document.getElementById('obj').src   = objData.src;
	obj3 = document.getElementById('desc').innerHTML = objData.desc;
}

function timerNavigator()
{
	var intervalo = window.setInterval('changeNavigator()', 10000);
}