function updateDateDue() {
	document.getElementById('date_due').value =
		document.getElementById('date_due_date').value + ' '+
		document.getElementById('date_due_hours').value + ':'+
		document.getElementById('date_due_minutes').value;
}

function updateDateStart() {
	document.getElementById('date_start').value =
		document.getElementById('date_start_date').value + ' '+
		document.getElementById('date_start_hours').value + ':'+
		document.getElementById('date_start_minutes').value;
}
function getCurrentDate() {
	var d = new Date();
	var m = d.getMonth()+1;
	if (m<10) m='0'+m;
	var today = d.getDate()+'.'+m+'.'+d.getFullYear();
	return today;
}

function getCurrentTime(what) {
	var t = new Date();
	var h = t.getHours();
	var m = t.getMinutes();
	
	//m can only be 0,15,30,45
	if (m/15>2.4)
		m = 15*Math.floor(m/15);
	else
		m = 15*(Math.floor(m/15)+1);
	
	if (m<1) m='00';
	
	var act_time = h+':'+m;
	
	if (what==1)
		return act_time;
	if (what==2)
		return h;
	if (what==3)
		return m;
}

function addEvent(object,eventName,do_function) {
  if(typeof(object) == "string") object = document.getElementById(object);
  if(!object) { alert('No object in function addEvent!'); return; }
  if(object.addEventListener) {
    object.addEventListener(eventName, do_function, false);
	} else {
		object.attachEvent('on'+eventName, do_function);
	} 
}

function hideFields() {
	document.getElementById('date_due_date').style.display='none';
	document.getElementById('date_due_trigger').style.display='none';
	
	document.getElementById('date_start_date').style.display='none';
	document.getElementById('date_start_trigger').style.display='none';
	
	document.getElementById('job_date_time_section').style.display='none';
	
	if (document.getElementById('all_day').checked==true) {
		document.getElementById('date_due_minutes').disabled=true;
		document.getElementById('date_due_hours').disabled=true;
		document.getElementById('date_start_minutes').disabled=true;
		document.getElementById('date_start_hours').disabled=true;
		document.getElementById('no_time_finish').disabled=true;
	}
	
	if (document.getElementById('no_time_finish').checked==true) {
		document.getElementById('date_due_minutes').disabled=true;
		document.getElementById('date_due_hours').disabled=true;	
	}
	}

function fillData() {
	if (NEW_TASK==1) {
		document.getElementById('job_date_date').value = getCurrentDate();
		document.getElementById('date_start_date').value = getCurrentDate();
		document.getElementById('date_due_date').value = getCurrentDate();
		document.getElementById('date_start_hours').value = '08';
		document.getElementById('date_start_minutes').value = '00';
		document.getElementById('date_due_hours').value = '08';
		document.getElementById('date_due_minutes').value = '30';
		document.getElementById('job_date_hours').value = '08';
		document.getElementById('job_date_minutes').value = '00';
		document.getElementById('date_start').value=getCurrentDate()+' 08:00';
		document.getElementById('date_due').value=getCurrentDate()+' 08:30';
	} else {
		document.getElementById('job_date_date').value = document.getElementById('date_start_date').value;
		document.getElementById('job_date_hours').value = document.getElementById('date_start_hours').value;
		document.getElementById('job_date_minutes').value = document.getElementById('date_start_minutes').value;
	}
	
}

//onStart
addEvent(window,'load', function() {
	
	hideFields();
	fillData();

	
	//to remember time after select 'all_day'
	var sh = document.getElementById('date_start_hours').value;
	var sm = document.getElementById('date_start_minutes').value;
	var dh = document.getElementById('date_due_hours').value;
	var dm = document.getElementById('date_due_minutes').value;
	
	document.getElementById('job_date_date').onchange = function() {
		obj = document.getElementById('job_date_date');
		document.getElementById('date_start_date').value = obj.value;
		document.getElementById('date_due_date').value = obj.value;
		document.getElementById('date_start').value=obj.value+' '+document.getElementById('date_start_hours').value+':'+document.getElementById('date_start_minutes').value;
		document.getElementById('date_due').value=obj.value+' '+document.getElementById('date_due_hours').value+':'+document.getElementById('date_due_minutes').value;
	}
	document.getElementById('all_day').onchange = function() {
		obj=document.getElementById('all_day');
		if (obj.checked==true) {
			sh = document.getElementById('date_start_hours').value;
			sm = document.getElementById('date_start_minutes').value;
			dh = document.getElementById('date_due_hours').value;
			dm = document.getElementById('date_due_minutes').value;
			
			document.getElementById('date_start_hours').value = '08';
			document.getElementById('date_start_minutes').value = '00';
			document.getElementById('date_due_hours').value = '16';
			document.getElementById('date_due_minutes').value = '00';
			document.getElementById('job_date_hours').value = '08';
			document.getElementById('job_date_minutes').value = '00';
			updateDateDue();
			updateDateStart();
			
			
			document.getElementById('date_due_minutes').disabled=true;
			document.getElementById('date_due_hours').disabled=true;
			document.getElementById('date_start_minutes').disabled=true;
			document.getElementById('date_start_hours').disabled=true;
			document.getElementById('no_time_finish').disabled=true;
		}else{
			document.getElementById('date_start_hours').value = sh;
			document.getElementById('date_start_minutes').value = sm;
			document.getElementById('date_due_hours').value = dh;
			document.getElementById('date_due_minutes').value = dm;
			document.getElementById('job_date_hours').value = sh;
			document.getElementById('job_date_minutes').value = sm;
			updateDateDue();
			updateDateStart();
			
							
			document.getElementById('date_due_minutes').disabled=false;
			document.getElementById('date_due_hours').disabled=false;
			document.getElementById('date_start_minutes').disabled=false;
			document.getElementById('date_start_hours').disabled=false;
			document.getElementById('no_time_finish').disabled=false;
			}
	}
	
	document.getElementById('status').onchange=function() {
		var obj = document.getElementById('status');
		if ((obj.value=='made') || (obj.value=='canceled')) {
			//set all data and time filds to actual date() value
			document.getElementById('job_date_date').value = getCurrentDate();
			document.getElementById('date_start_date').value = getCurrentDate();
			document.getElementById('date_due_date').value = getCurrentDate();
			document.getElementById('date_start_hours').value = getCurrentTime(2);
			document.getElementById('date_start_minutes').value = getCurrentTime(3);
			document.getElementById('date_due_hours').value = getCurrentTime(2);
			document.getElementById('date_due_minutes').value = getCurrentTime(3);
			document.getElementById('job_date_hours').value = getCurrentTime(2);
			document.getElementById('job_date_minutes').value = getCurrentTime(3);
			document.getElementById('date_start').value=getCurrentDate()+' '+getCurrentTime(1);
			document.getElementById('date_due').value=getCurrentDate()+' '+getCurrentTime(1);
		}
	}
	
	document.getElementById('no_time_finish').onchange=function() {
		var obj = document.getElementById('no_time_finish');
		if (obj.checked==true) {
			document.getElementById('date_due_hours').value='23';
			document.getElementById('date_due_minutes').value='45';
			
			document.getElementById('date_due_minutes').disabled=true;
			document.getElementById('date_due_hours').disabled=true;
			
		}else{
			document.getElementById('date_due_hours').value='08';
			document.getElementById('date_due_minutes').value='30';
			
			document.getElementById('date_due_minutes').disabled=false;
			document.getElementById('date_due_hours').disabled=false;
		}
		
		updateDateDue();

	}
	
  }
);