Putt dette scriptet mellom HEAD-taggene (eller legg det i en .js-fil):

//Enter path to mid file to play
var musicsrc="apollo13.mid"

function sivamtime() {
	now=new Date();
	hour=now.getHours();
	min=now.getMinutes();
	sec=now.getSeconds();

if (min<=9) {
	min="0"+min;
 }
if (sec<=9) {
	sec="0"+sec;
 }
if (hour>12) {
	hour=hour-12;
	add="pm";
 }
else {
	hour=hour;
	add="am";
 }
if (hour==12) {
	add="pm";
 }
if (hour==00) {
	hour="12";
 }

document.hours.clock.value = (hour<=9) ? "0"+hour : hour;
  document.minutes.clock.value = min;
  document.seconds.clock.value = sec;
  document.ampm.clock.value= add;
 setTimeout("sivamtime()", 1000);

}

playit=false
//PLAY MUSIC function by http://www.javascriptkit.com
function playmusic(){
musicwin=window.open("","","width=100,height=100")
if (navigator.appName=="Microsoft Internet Explorer")
musicwin.document.write('<bgsound src='+'"'+musicsrc+'"'+' loop="infinite">')
else
musicwin.document.write('<embed src=\"'+musicsrc+'\" hidden="true" border="0" width="20" height="20" autostart="true" loop="true">')
musicwin.document.close()
}

function soundcheck(cbox){
playit=cbox.checked
}

function alarm() {
    note = document.arlm.message.value;
    if (note == '') {note = 'ALARM!!';}

hrs = document.arlm.hr.value;
    min = document.arlm.mts.value;
    apm = document.arlm.am_pm.value;

if ((document.hours.clock.value == hrs) &&
    (document.minutes.clock.value == min) &&
    (document.ampm.clock.value == apm)) {
     if (playit)
     playmusic()
     else
     alert(note);
     return false}

if (hrs == '') {alert('The Hour field is empty'); return false}
 if (min == '') {alert('The Minute field is empty'); return false}
 if (apm == '') {alert('The am/pm field is empty'); return false}

if (hrs.length == 1) {document.arlm.hr.value = '0' + hrs}
 if (min.length == 1) {document.arlm.mts.value = '0' + min}
 if (hrs.length > 2) {alert('The Hour is wrongly typed.'); return false}
 if (min.length > 2) {alert('The Minute is wrongly typed.'); return false}
 if (apm != 'am' && apm != 'pm' ) {alert('The am/pm is wrongly typed.'); return false}

setTimeout("alarm()", 1000);}
</script>

</script>

Så putter du onLoad="sivamtime()" inn i BODY-taggen (= <body onLoad="sivamtime()">)

Formen til alarmklokken putter du der du vil:
Farger og style endrer du etter eget ønske

<table border="2" style="border-color:darkblue;" width=170 align="center" bgcolor="#99CCCC" cellspacing="0" cellpadding="2" width="136">
<tr><td colspan="4">
<center><b><font size="-1">Klokken er nå:</font></b></center>
</td></tr><tr><td>
<form name="hours"><input type="text" size="2" name="clock" /> </form></td><td>
<form name="minutes"><input type="text" size="2" name="clock" /> </form></td><td>
<form name="seconds"><input type="text" size="2" name="clock" /> </form></td><td>
<form name="ampm"><input type="text" size="2" name="clock" /> </form></td>
</tr></table>
<br />
<table border="2" align="center" style="border-color:darkblue;" width=170 bgcolor="#99CCCC" cellspacing="0" cellpadding="2" width="136"><tr><td colspan="3">
<form name="arlm">
<center><b><font size="-1">Sett alarmtid:</font></b></center>
</td></tr><tr align="center"><td>
<font size="1">Time </font></td>
<td><font size="1">Minutt </font></td>
<td><font size="1">am/pm </font></td>
</tr><tr align="center"><td>
<input type="text" size="2" name="hr" onFocus="select()" /></td>
<td>
<input type="text" size="2" name="mts" onFocus="select()" /></td>
<td>
<input type="text" size="2" value="am" name="am_pm" onFocus="select()" /></td>
</tr><tr align="left">
<td colspan="3"><font size="-1"><b>Melding:</b> </font></td>
</tr><tr align="left"><td colspan="3">
<input type="text" size="15" value="Vokne opp!" name="message" /><br />
<input type="checkbox" name="C1" value="ON" onClick="soundcheck(this)"> <font size="1">Spille musikk? </font>
</td></tr><tr><td align="center" colspan="3">
<input type="button" size="2" value="Sett Alarm" onClick="alarm()" />
</td></tr><tr><td align="center" colspan="3">
<input type="button" size="2" value="Reset" onClick="reset()" />
</td></tr></table>
</form>
<p align="center"><font face="arial" size="-2">Dette gratis-scriptet er skaffet av<br />
<font face="arial, helvetica" size="-2"><a href="http://infolinx-no.com">Infolinx-no.com</a></p>

Klokken er nå:

Sett alarmtid:
Time	Minutt	am/pm

Melding:
Spille musikk?