function getElementsByClassName(oggetto, classe) {
    var elems=oggetto.getElementsByTagName("*"),
          elemsToReturn=[];
    for(var i=0, l=elems.length; i!=l; i++)
       {
           if(elems[i].className==classe) {  
                 elemsToReturn[elemsToReturn.length]=elems[i];
           }
       }
   return elemsToReturn;
}
boxettini=getElementsByClassName(document.getElementById("boxinfo"), "boxcontent");
for (i=1; i<boxettini.length; i++){boxettini[i].style.display = "none"}
links=document.getElementById('boxnav').getElementsByTagName('a');
for (y=0; y<links.length; y++){links[y].className = "off"};
links[0].className = "on";

function light(element){
	boxettini=getElementsByClassName(document.getElementById("boxinfo"), "boxcontent");
	for (i=0; i<boxettini.length; i++){boxettini[i].style.display = "none"}
	boxettini[element].style.display = "block";
	
	links=document.getElementById('boxnav').getElementsByTagName('a');
	for (y=0; y<links.length; y++){links[y].className = "off"}
	links[element].className = "on";
}



var anchors = document.getElementsByTagName("a");
	for (var i=0; i<anchors.length; i++) {
		var anchor = anchors[i];
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "lightbox") {
			for (var f=0; f<anchor.childNodes.length; f++) {
				if(anchor.childNodes[f].tagName == "IMG"){
					anchor.childNodes[f].className = 'bordo';
				}
			}
		}

	}