function tick() {
var hours, minutes, seconds;
var intHours, intMinutes, intSeconds;
var today;
today = new Date();
intHours = today.getHours();
intMinutes = today.getMinutes();
intSeconds = today.getSeconds();
if (intHours == 0) {
hours = "24:";
ap = "";}
else if (intHours < 24) { 
hours = intHours+":";
ap = "";}
else if (intHours == 24) {
hours = "12:";
ap = "";} else {
intHours = intHours - 24
hours = intHours + ":";
ap = "";}
if (intMinutes < 10) {
minutes = "0"+intMinutes+":";
} else {
minutes = intMinutes+":";}
if (intSeconds < 10) {
seconds = "0"+intSeconds+" ";
} else {
seconds = intSeconds+" "; } 
timeString = hours+minutes+seconds+ap;
Clock.innerHTML = timeString;
window.setTimeout("tick();", 100);}
window.onload = tick;