function primo_piano(id) 
	{
	
    var list = document.getElementById("contenitore");
    var items = list.getElementsByTagName("div");
    var itemsString = "";
	var itemIDs = "";
	
    	for (var i = 0; i < items.length; i++) 
		{
			var id_temp = items[i].id;
			switch(items[i].className)
			{
			case "cartella-desktop":
			document.getElementById(id_temp).style.zIndex=10;
			document.getElementById(id_temp).style.border="";
			document.getElementById(id_temp).style.padding=7+"px";
			document.getElementById(id_temp+"-titolo").style.backgroundColor="";
			document.getElementById(id_temp+"-titolo").style.color="#000000";
			break;
			case "file-desktop-word":
			document.getElementById(id_temp).style.zIndex=10;
			document.getElementById(id_temp).style.border="";
			document.getElementById(id_temp).style.padding=7+"px";
			document.getElementById(id_temp+"-titolo").style.backgroundColor="";
			document.getElementById(id_temp+"-titolo").style.color="#000000";
			
			break;
			case "cartella-aperta":
			document.getElementById(id_temp).style.zIndex=20;
			break;
			case "applicazione":
			document.getElementById(id_temp).style.zIndex=20;	
			break;
			case "file-word":
			document.getElementById(id_temp).style.zIndex=20;	
			break;
			case "file-anteprima":
			document.getElementById(id_temp).style.zIndex=20;	
			break;
			}
		}
		
		if (id=="cartella_x")
		{
		document.getElementById("cartella_1").style.zIndex=200;
		document.getElementById("cartella_2").style.zIndex=200;
		return;	
		}
		
		///NEL CASO NON VOGLIA METTERE IN EVIDENZA NULLA
		
		if (id!="null")
		{
			
				switch(document.getElementById(id).className)
				{
				case "cartella-desktop":
				document.getElementById(id).style.zIndex=11;
				document.getElementById(id).style.border="2px #CCCCCC solid";
				document.getElementById(id).style.padding=5+"px";
				document.getElementById(id+"-titolo").style.backgroundColor="#3875d7";
				document.getElementById(id+"-titolo").style.color="#ffffff";
				break;
				case "file-desktop-word":
				document.getElementById(id).style.zIndex=11;
				document.getElementById(id).style.border="2px #CCCCCC solid";
				document.getElementById(id).style.padding=5+"px";
				document.getElementById(id+"-titolo").style.backgroundColor="#3875d7";
				document.getElementById(id+"-titolo").style.color="#ffffff";
				
				break;
				case "cartella-aperta":
				document.getElementById(id).style.zIndex=200;
				break;
				case "applicazione":
				document.getElementById(id).style.zIndex=200;
				break;
				case "file-word":
				document.getElementById(id).style.zIndex=200;
				break;
				case "file-anteprima":
				document.getElementById(id).style.zIndex=200;
				break;
				}
		}
	}