function vediEvidenza(id, foto, url, alt) {
	try {
		var foto = randomFoto(foto);
	}
	catch(e) {
		/*
		var foto = "default";
		url = "http://www.unikore.it";
		alt = "Unikore";
		*/
	}
	finally {
		document.getElementById('foto_loader').style.display='block';
		document.getElementById('foto_content').style.display='none';
		document.foto_home.src = "sito_2.0/foto/default/"+foto+".jpg";
		document.getElementById("link_foto_home").href = url;
		document.getElementById("link_foto_home").title = alt;
		document.getElementById("evid_"+randomLink).className = "evid_not_selected";
		//document.getElementById(id).className = "evid_selected";
		//initImage('foto_home');
	}
}

function randomLink(linkForzato, links) {
	try {
		if(linkForzato == '')
			randomLink = Math.floor(Math.random()*links);
		else
			randomLink = linkForzato;
	}
	catch(e) {
		randomLink = 0
		var foto = "default";
		url = "http://www.unikore.it";
		alt = "Unikore";
	}
	finally {
		var foto = document.getElementById("evid_"+randomLink).name;
		url = document.getElementById("evid_"+randomLink).href;
		alt = document.getElementById("evid_"+randomLink).title;
		vediEvidenza("evid_"+randomLink, foto, url, alt);
		document.getElementById("evid_"+randomLink).className = "evid_selected";
	}
}

function caricaImg() {
	document.getElementById('foto_loader').style.display='none';
	document.getElementById('foto_content').style.display='block';
}

function randomFoto(fotoArr) {
	fotoArr = fotoArr.split(",");
	var numArr = Math.floor(Math.random()*fotoArr.length);
	return fotoArr[numArr];
}

function slideFotoCorsi(maxFoto,cartella,rev) {
	//document.getElementById('foto_loader').style.display='block';
	//document.getElementById('foto_content').style.display='none';
	document.foto_home.src = "sito_2.0/img/nulla.gif";
	if(rev==false) {
		randomnumber = parseInt(document.foto_home.id) + 1;
		if(randomnumber>=maxFoto)
			randomnumber = 1;
	}
	else if(rev==true) {
		randomnumber = parseInt(document.foto_home.id) - 1;
		if(randomnumber==0)
			randomnumber = 1;
	}
	document.foto_home.src = "sito_2.0/foto/"+cartella+"/"+randomnumber+".jpg";
	document.foto_home.id = randomnumber;
}

function initImage(imageId) {
	if(imageSet==true) {
		image = document.getElementById(imageId);
		setOpacity(image, 0);
		image.style.visibility = 'visible';
		fadeIn(imageId,0);
	}
}

function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;
  
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  
  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;
  
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}

function fadeIn(objId,opacity) {
if (document.getElementById) {
	obj = document.getElementById(objId);
	if (opacity <= 100) {
	  imageSet = false;
	  setOpacity(obj, opacity);
	  opacity += 10;
	  window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 90);
	}
	else
	imageSet = true;
  }
}