var tot_img_to_preload=0;

function checkImgComplete(image, string, i){
	new PeriodicalExecuter(function(pe){
		if (image.complete){
			$$('.photo')[i].update(string);
			pe.stop();
			tot_img_to_preload--;
			if(!tot_img_to_preload && $('nav_spinner')){
				$('nav_spinner').hide();
			}
		}
	}, 5);
}//checkImgComplete

function preloadImages(){
	if(typeof(photos_to_preload) !== 'undefined'){
		tot_img_to_preload=photos_to_preload.length;
		for(i=0; i<photos_to_preload.length; i++){
			var image=new Image; 
			image.src=photos_to_preload[i].url;
			var string=photos_to_preload[i].string;
			checkImgComplete(image, string, i+1);
		}
	}
}//preloadImages

function moveSlideShow(){
	var ps=$$('.photo');
	if(ps.length>1){
		ps.each(function(elt, index){
			if(elt.visible()){
				ps=$$('.photo');
				next_elt= ps.length==index+1 ? ps[0] : elt.next('div');
				new_position= ps.length==index+1 ? 1 : index+2;
				if(Element.empty(next_elt)){
					setTimeout("moveSlideShow()", 500);
					throw $break;
				}else{
					new Effect.Fade(elt);
					new Effect.Appear(next_elt);
					if($('nav_position')){
						$('nav_position').update(new_position);
					}
					setTimeout("moveSlideShow()", 5000);
					throw $break;
				}
			}
		});
	}
}//moveSlideShow

function activeSlideShow(){
	var ps=$$('.photo');
	if(ps.length>1){
		preloadImages();
		$('photos').setStyle({backgroundImage:'none'});
		moveSlideShow();
	}
}//activeSlideShow

function inizio(){
	if(supersleight){supersleight.init();}
	cerca_rollover();
}//inizio

Event.observe(window, 'load', inizio);