var curpage=0;
var timer=null;
//var imagesWidth=null;
//var imagesHeight=null;
var slideHeight=0;
var stopped = false;
var numpages = 0;
var arraySlides;
var obj;

function test()
{}


function fnc_next()
{
	if (curpage > numpages-1)
	{
		curpage=0;
	}

	obj=arraySlides[curpage];
	obj.style.visibility = "hidden";
	obj.style.display = "none";
	//obj.style.height = "1px";

	curpage++;

	if (curpage>numpages - 1) 
	{
		curpage = 0;
	}

	obj=arraySlides[curpage];
	obj.style.visibility = "visible";
	obj.style.display = "block";
	obj.style.height = slideHeight + "px";

	if(!stopped)
	{
		clearTimeout(timer);
		start();
	}

}

function fnc_prev()
{
	if (curpage>numpages)	curpage = 0;

	//Obtengo la nota Actual
	obj= arraySlides[curpage];

	if(obj)
	{
		obj.style.visibility = "hidden";
		obj.style.display = "none";
		//obj.style.height = "1px";
	}
	
	curpage--;
	if (curpage<0)	curpage = numpages-1;

	//Obtengo la nota Anterior
	obj=arraySlides[curpage];
	if(obj)
	{
		obj.style.visibility = "visible";
		obj.style.display = "block";
		obj.style.height = slideHeight + "px";
	}

	if(!stopped)
	{
		clearTimeout(timer);
		start();
	}
}



function stop() 
{
	if (!(stopped)) 
	{
		clearTimeout(timer);
		stopped=true;
	}
}
function start() 
{
	//timer=setTimeout('fnc_next()',10000);
	timer=setTimeout('fnc_next()',15000);
	stopped=false;
}


function firsthide()
{
	

	arraySlides = document.getElementsByName("rota");

	numpages = arraySlides.length;


}