var num=Array("");

function setNumber(n){
	var tdObj=document.getElementById("td" + n);
	var sel=tdObj.getAttribute("sel");
	if (sel==1){
		num[n]=0;
		tdObj.setAttribute("sel","0");
		tdObj.style.background="#F2F2F2";
		
		}else{
		num[n]=1;
		tdObj.style.background="#FFFF00";
		tdObj.setAttribute("sel",'1');
		}
	stampaResult();
}
function stampaResult(){	
	var num_selobj=document.getElementById("num_sel");
	var r="";
	for (i=1;i<91;i++){			
	if (document.getElementById("td" + i).getAttribute("sel")==1)r+=i + ".";
}
	document.getElementById("numeri").value=r;
	//num_selobj.innerHTML=r;
	}