function clock() {
var cont = document.getElementById("mnt")
var minuti = document.getElementById("mnt").innerHTML;
var or = minuti.slice(0, 2);
var mn = minuti.slice(3, 5);
var sc = minuti.slice(6, 8);
var aggiornato = ++sc;
//========================================
if (sc == 60) {
sc = "00";
++mn;
}
if (mn == 60) {
mn = "00";
++or;
}
if (or == 24) or = "00";
//========================================
or = String(or);
if (or.slice(0, 1) != "0") {
if (or <= 9) or = "0" + or;
}
mn = String(mn);
if (mn.slice(0, 1) != "0") {
if (mn <= 9) mn = "0" + mn;
}
sc = String(sc);
if (sc.slice(0, 1) != "0") {
if (sc <= 9) sc = "0" + sc;
}
//if (sc <= 9) sc = "0" + sc;
cont.innerHTML = or + ":" + mn + ":" + sc;
setTimeout("clock()", 1000);
}