I need to a PDF form to calculate the number of hours between two times, subtracting breaks.

I’ve been searching for days and haven’t been able to find a script that at least calculates the time worked with breaks subtracted. Here’s what I was trying to do with scripts copied from the forums, noting that I have information here that’s not needed…

if ((this.getField("FinishTimeWEDNESDAY").value.length == 0) || (this.getField("StartTimeWEDNESDAY").value.length == 0)) {

event.value = " 0 Hours 0 Minutes";

}

else{

var timefinished = this.getField("FinishTimeWEDNESDAY").value;

var timestarted = this.getField("StartTimeWEDNESDAY").value;

var datetimefinished = new Date('1970/01/01' + " " + timefinished);

var datetimestarted = new Date('1970/01/01' + " " + timestarted);

if(datetimefinished<datetimestarted)
{
var date=new Date(datetimefinished)
date.setDate(date.getDate()+1);
datetimefinished=date;
}

var difflnMilliSeconds = Math.abs(datetimefinished - datetimestarted)/1000;

var hours = Math.floor(difflnMilliSeconds / 3600) % 24;

difflnMilliSeconds -= hours *3600;

var minutes = Math.floor(difflnMilliSeconds / 60) % 60;

difflnMilliSeconds -= minutes * 60;

event.value = hours + (minutes/60) ;

event.value = getField("TotalHoursMONDAY").value - getField("Lunch BreakWEDNESDAY").value - getField("Other BreaksWEDNESDAY").value;
}