var timercount = 0;
var timestart  = null;
 
function showtimer() {
//
	   if(! document.timeform) {
	     return false;
	   }
//
    if(timercount) {
        clearTimeout(timercount);
        clockID = 0;
    }
    if(!timestart){
        timestart = new Date();
    }
    var timeend = new Date();
    var timedifference = timeend.getTime() - timestart.getTime();
    timeend.setTime(timedifference);
    var minutes_passed = timeend.getMinutes();
    if(minutes_passed <10){
        minutes_passed = "0" + minutes_passed;
    }
    var seconds_passed = timeend.getSeconds();
    if(seconds_passed <10){
        seconds_passed = "0" + seconds_passed;
    }
    document.timeform.timetextarea.value = minutes_passed + ":" + seconds_passed;
    timercount = setTimeout("showtimer()", 1000);
}
 
function swStart(){
//
	   if(! document.timeform) {
	     return false;
	   }
//
    if(!timercount){
    timestart   = new Date();
    document.timeform.timetextarea.value = "00:00";
    if(document.timeform.laptime)
    {
      document.timeform.laptime.value = "";
    }
    timercount  = setTimeout("showtimer()", 1000);
    }
    else{
    var timeend = new Date();
        var timedifference = timeend.getTime() - timestart.getTime();
        timeend.setTime(timedifference);
        var minutes_passed = timeend.getMinutes();
        if(minutes_passed <10){
            minutes_passed = "0" + minutes_passed;
        }
        var seconds_passed = timeend.getSeconds();
        if(seconds_passed <10){
            seconds_passed = "0" + seconds_passed;
        }
        var milliseconds_passed = timeend.getMilliseconds();
        if(milliseconds_passed <10){
            milliseconds_passed = "00" + milliseconds_passed;
        }
        else if(milliseconds_passed <100){
            milliseconds_passed = "0" + milliseconds_passed;
        }
        if(document.timeform.laptime)
        {
          document.timeform.laptime.value = minutes_passed + ":" + seconds_passed + "." + milliseconds_passed;
        }
    }
}
 
function swStop() {
//
	   if(! document.timeform) {
	     return false;
	   }
//
    if(timercount) {
        clearTimeout(timercount);
        timercount  = 0;
        var timeend = new Date();
        var timedifference = timeend.getTime() - timestart.getTime();
        timeend.setTime(timedifference);
        var minutes_passed = timeend.getMinutes();
        if(minutes_passed <10){
            minutes_passed = "0" + minutes_passed;
        }
        var seconds_passed = timeend.getSeconds();
        if(seconds_passed <10){
            seconds_passed = "0" + seconds_passed;
        }
        var milliseconds_passed = timeend.getMilliseconds();
        if(milliseconds_passed <10){
            milliseconds_passed = "00" + milliseconds_passed;
        }
        else if(milliseconds_passed <100){
            milliseconds_passed = "0" + milliseconds_passed;
        }
        document.timeform.timetextarea.value = minutes_passed + ":" + seconds_passed + "." + milliseconds_passed;
    }
    timercount = 0;
    timestart = null;
}
 
function swReset() {
//
	   if(! document.timeform) {
	     return false;
	   }
//
    timestart = null;
    document.timeform.timetextarea.value = "00:00";
    if(document.timeform.laptime)
    {
      document.timeform.laptime.value = "";
    }
}