var _current = 0;
var itemsLength = 0;
var interval;
Event.observe(window,'load',init);

function init(){
var ajaxOrderLinks=$$('.item-edito');
ajaxOrderLinks.each(function(elmt){
	itemsLength++;
});
interval = setInterval('next()',4000);
}

function next(){
	$('item-edito-'+_current).hide();
	$('linkEdito-'+_current).removeClassName('active');
	if(_current < itemsLength - 1){
		_current = _current + 1;
	}
	else{
		_current = 0;
	}
	
	$('item-edito-'+_current).setStyle('display:block');
	$('linkEdito-'+_current).addClassName('active');
}

function previous(){
	$('item-edito-'+_current).hide();
	$('linkEdito-'+_current).removeClassName('active');
	if(_current == 0){
		_current = itemsLength - 1;
	}
	else{
		_current -= 1;
	}
	$('item-edito-'+_current).setStyle('display:block');
	$('linkEdito-'+_current).addClassName('active');
}

function showEdito(index){
	
	clearInterval(interval);
	$('item-edito-'+_current).hide();
	$('linkEdito-'+_current).removeClassName('active');
	if(index < itemsLength){
		_current = index;
	}
	else{
		_current = 0;
	}
	$('item-edito-'+_current).setStyle('display:block');
	$('linkEdito-'+_current).addClassName('active');
	interval = setInterval('next()',4000);
}

function btnNext(){
	clearInterval(interval);
	next();
	interval = setInterval('next()',4000);
}

function btnPrevious(){
	clearInterval(interval);
	previous();
	interval = setInterval('next()',4000);
}