var nav;

function unset_nav() { nav = false; }
function set_nav() { nav = true; }
function pag_prec() {
	if(nav) {
		unset_nav();
		active_page--;
		new Effect.Move("news-inner", {x:0,y:264,duration:0.3, afterFinish:set_nav});
		$$('#news-nav #dx')[0].style.display = "";
		if(active_page<2)
			$$('#news-nav #sx')[0].style.display = "none";
	}
}
function pag_succ() {
	if(nav) {
		unset_nav();
		active_page++;
		new Effect.Move("news-inner", {x:0,y:-264,duration:0.3, afterFinish:set_nav});
		$$('#news-nav #sx')[0].style.display = "";
		if(active_page==num_pages)
			$$('#news-nav #dx')[0].style.display = "none";
	}
}
function news_init() {
	$("news-inner").style.top=(-264*(active_page-1))+"px";
	$("news-inner").style.display="";
	nav=true;
	if(active_page!=1)
		$$('#news-nav #sx')[0].style.display = "";
	if(active_page!=num_pages)
		$$('#news-nav #dx')[0].style.display = "";
	Event.observe($$('#news-nav #sx')[0], 'click', pag_prec);
	Event.observe($$('#news-nav #dx')[0], 'click', pag_succ);
}

function thumb_clicked(index) {
	$$('#news-dx-img #immagine')[0].src=$$('.thumb-img')[index].src;
	for(i=0;i<$$('.thumb-maschera').length;i++) {
		if(i==index)
			$$('.thumb-maschera')[i].style.cursor="default";
		else
			$$('.thumb-maschera')[i].style.cursor="pointer";
	}
	
}

function thumbs_init() {
	for(i=0;i<$$('.thumb-maschera').length;i++) {
		if(i!=0)
			$$('.thumb-maschera')[i].style.cursor="pointer";
		Event.observe($$('.thumb-maschera')[i], 'click', thumb_clicked.bind(this,i));
	}
}

Event.observe(window, 'load', news_init);
Event.observe(window, 'load', thumbs_init);