Código HTML:
<script language="JavaScript"> <!-- function getTime() { var now = new Date() var hour = now.getHours() var minute = now.getMinutes() var seconds = now.getSeconds() now = null var ampm = "" if (hour >= 12) { hour -= 12 ampm = "PM" } else{ ampm = "AM" hour = (hour == 0) ? 12 : hour if (minute < 10) minute = "0" + minute return hour + ":" + minute + ":"+seconds +" "+ ampm } //setTimeout("getTime()",1000) } today = new Date() document.write(getTime()) setTimeout(getTime(),1000) // --> </script>