hvis start/slut altid er sammen dag, som splazz, spørger om kna du bruge denne:
<script type="text/javascript">
//<![CDATA[
//
http://www.eksperten.dk/spm/924459 function Time2Sec(timestr){
var sec = 0;
var timearray = timestr.split(':');
sec = parseInt(timearray[0]*60*60); // timer
sec += parseInt(timearray[1]*60);
return sec;
}
function formattime(sec){
days = parseInt( sec/86400 );
hours = parseInt( (sec/3600) % 24 );
minutes = parseInt( (sec / 60) % 60 );
seconds = parseInt( sec % 60 );
return "dage = "+days+" Timer = "+hours+" minutter = "+minutes+" sec = "+seconds;
}
//]]>
</script>
<body>
<script type="text/javascript">
time1sec = Time2Sec('07:00');
time2sec = Time2Sec('15:15');
sec = time2sec-time1sec;
document.write(formattime(sec));
</script>
</body>