var mode = 'start';
var starttd = '';
var endtd = '';
var lastFormEntry;


function switchCalendar(id)
{
  document.getElementById("calendar2025").style.display = "none";
  document.getElementById("calendar2024").style.display = "none";
  document.getElementById("link2025").style.color = "#000000";
  document.getElementById("link2024").style.color = "#000000";

	document.getElementById('calendar' + id).style.display = 'block';
	document.getElementById('link' + id).style.color = '#dd0000';
	
}





function makeCalendarActive(Year)
{
	for(i = 1; i <= 12; i++)
	{
		for(j = 1; j <= 38; j++)
		{
			td = document.getElementById('d' + j + '.' + i + '.' + Year);
			//alert(td);
			if(td)
			{
			//alert (i +' ' + j);
			
				td.onmouseover = function() { // funkcja podswietlajaca na czerwono nazwy dni jak sie najedzie myszka
					if(this.className == 'day_reserved' || this.className == 'weekend_reserved')
						this.style.color = '#ffffff';
					else
						this.style.color = '#ff0000';

					idx = this.id.indexOf('.');
					my = this.id.substring(idx+1, this.id.length);
					d = this.id.substring(1, idx);
					idx=my.indexOf('.');
					m=my.substring(0,idx);
					y=my.substring(idx+1,my.length);
          //alert('m ' + m);
          //alert('d ' + d);
          //alert('y ' + y);
          //alert(d+'.'+m+'.'+y);
					//x = document.getElementById('d' + realYear(m) + '_' + d);
					//if(x.style.color == '#ff0000')
					//	x.style.color = '#ff0001';
					//else
					//	x.style.color = '#ff0000';
					
					//document.getElementById('m' + m).style.color = '#ff0000';
				}
				
				td.onmouseout = function() {// funkcja zmieniajaca na czarno nazwy dni jak kursor z nich zjezdza
					this.style.color = '#000000';

					idx = this.id.indexOf('.');
					my = this.id.substring(idx+1, this.id.length);
					d = this.id.substring(1, idx);
					idx=my.indexOf('.');
					m=my.substring(0,idx);
					y=my.substring(idx+1,my.length);

					//x = document.getElementById('d' + realYear(m) + '_' + d);
					//if(x.style.color == '#ff0001')
					//	x.style.color = '#ff0000';
					//else
					//	x.style.color = '#000000';
						
					//document.getElementById('m' + m).style.color = '#000000';
				}
				
				
				if(td.className == 'day_selected' || td.className == 'weekend_selected')
				{
					td.onmouseover = function() {
						document.getElementById('si' + this.id).style.display = 'block';
					}
					
					td.onmouseout = function() {
						document.getElementById('si' + this.id).style.display = 'none';
					}
				}
				
				if(td.className != 'day_selected' && td.className != 'day_reserved' && td.className != 'weekend_selected' && td.className != 'weekend_reserved' && td.className != 'day_reserved_selected' && td.className != 'day_selected_reserved' && td.className != 'weekend_reserved_selected' && td.className != 'weekend_selected_reserved')
				{
					td.style.cursor = 'hand';
					td.onclick = function() {
						//alert('przed mode');
						if(mode == 'stop')
						{
							// Zaznaczamy jesli ktos nie kliknal 2x w to samo pole
							if(starttd != this.id)
							{
								endtd = this.id;
								//alert(mode);
								selectCalendar(true, starttd, endtd);
								
								mode = 'start';
							}
							
						} else {
							// mode == start
							this.style.backgroundColor='';
							this.className += '_clicked';
							//alert(mode);
							// Usuwanie poprzedniego zaznaczenia
							clearCalendar(true);
						
							mode = 'stop';
							starttd = this.id;
							endtd = '';
						}
					}
				}
			}
		}
	}
}

function selectCalendar(useForm, start, end)
{
//alert('select');
	if(start == '' || end == '')
	{
    //alert('niestety nie udalo sie');
		return;
		}
//	disableForm(true);
		
	// Rozbijamy id
	//idx = start.indexOf('x');
	//startd = parseInt(start.substring(idx+1, start.length));
	//startm = parseInt(start.substring(0, idx));
		
	idx = start.indexOf('.');
	my = start.substring(idx+1, start.length);
	d = parseInt(start.substring(1, idx));
	idx=my.indexOf('.');
	m=parseInt(my.substring(0,idx));
	y=parseInt(my.substring(idx+1,my.length));

	startd=d;
	startm=m;
	starty=y;


	//idx = end.indexOf('x');
	//endd = parseInt(end.substring(idx+1, end.length));
	//endm = parseInt(end.substring(0, idx));

  idx = end.indexOf('.');
  
	my = end.substring(idx+1, end.length);
	d = parseInt(end.substring(1, idx));
	idx=my.indexOf('.');
	m=parseInt(my.substring(0,idx));
	y=parseInt(my.substring(idx+1,my.length));
  endd=d;
  endm=m;
  endy=y;
	
  //alert('endd:'+endd+'=='+'startd:'+startd);
	// Sprawdzamy czy zaznaczamy w przod czy w tyl
	if((starty > endy) || (starty == endy && endm < startm) || (startm == endm && endd < startd))
    {
		back = true;
		//alert('back');
		}
	else
		back = false;

	// Zmienne tymczasowe do petli
	tempd = startd;
	tempm = startm;
  tempy = starty;
	
	if((document.getElementById('d' + startd + '.' + startm + '.' + starty).className.indexOf('_first', 0) != -1 && back == false) || (document.getElementById('d' + startd + '.' + startm + '.' + starty).className.indexOf('_last', 0) != -1 && back == true))
		{
		
		return;
		}


	do {

		// Inkrementujemy lub dekrementujemy date
		if(back == false)
      {
        if(tempm < 12)
          {
          if(tempd < 31)
            {
              //alert('back=false, tempd='+tempd);
              tempd++;
            } 
          else 
            {
              //alert('back=false, tempd='+tempd);
              tempd = 1;
              tempm++;
            }
           }
           else
            {
            if(tempd < 31)
              {
                //alert('back=false, tempd='+tempd);
                tempd++;
              } 
            else 
              {
                //alert('back=false, tempd='+tempd);
                tempd = 1;
                tempm = 1;
                tempy++;
              }
            }
      } 
    else 
      {
        if (tempm > 1)
          {
            if(tempd > 1)
              {
                //alert('back=true, tempd='+tempd);
                tempd--;
              } 
            else 
              {
                //alert('back=true, tempd='+tempd);
                tempd = 31;
                tempm--;
              }
          }
        else
          {
            if(tempd > 1)
            {
              //alert('back=true, tempd='+tempd);
              tempd--;
            } 
          else 
            {
              //alert('back=true, tempd='+tempd);
              tempd = 31;
              tempm = 12;
              tempy--;
            }
          }
      }

		// Pobieramy komorke tabeli
		td = document.getElementById('d' + tempd + '.' + tempm + '.' + tempy);
		if(td)
		{
			td.style.backgroundColor='';
			td.className += '_clicked';
      //alert('dotad doszlismy');
			// Jesli natrafimy na istniejaca rezerwacje...
			if(td.className.indexOf('_reserved', 0) != -1 || td.className.indexOf('_selected', 0) != -1)
			{
				//idx = td.id.indexOf('.');
				//endm = parseInt(td.id.substring(0, idx));
				
				
				idx = td.id.indexOf('.');
        my = td.id.substring(idx+1, td.id.length);
        //d = end.id.substring(1, idx);
        idx=td.id.indexOf('.');
        endm=parseInt(my.substring(0,idx));
        //y=my.substring(idx+1,my.length);
				
				//alert('rez');

				break;
			}
      
			tdid = td.id;
			//alert(tdid + '=' + td.id);
		} else {
			tdid = 'd0.0.'+ starty;
		}

	} while(end != tdid);

	endtd = 'd' + tempd + '.' + tempm + '.' + tempy;
	starttd = start;
	
	// Jesli do tylu to odwracamy daty
	if(back == true)
	{
		temp = endd;
		endd = startd;
		startd = temp;

		temp = endm;
		endm = startm;
		startm = temp;

		temp = endtd;
		endtd = starttd;
		starttd = temp;		
		
		temp = endy;
		endy=starty;
		starty=temp;							
	}

	if(useForm == true)
	{
		// Wpisujemy wartosci do formularza
		
		tmp_starttd=document.getElementById(starttd);
		
		idx = starttd.indexOf('.');
    d = parseInt(starttd.substring(1, idx));
	
		document.reservation_form.start_d.value = d;
		document.reservation_form.start_m.value = startm;
		document.reservation_form.start_y.value = starty;

		tmp_endtd=document.getElementById(endtd);
		idx = endtd.indexOf('.');
    d = parseInt(endtd.substring(1, idx));
		document.reservation_form.end_d.value = d;
		document.reservation_form.end_m.value = endm;
		document.reservation_form.end_y.value = endy;	
	}
//alert('almost good');
//	disableForm(false);
}

function clearCalendar(clearForm)
{
	//alert("clear calendar");
	if(starttd != '' && endtd != '')
	{

		
		if(clearForm == true)
		{
			document.reservation_form.start_d.value = '';
			document.reservation_form.start_m.value = '';
			document.reservation_form.start_y.value = '';

			document.reservation_form.end_d.value = '';
			document.reservation_form.end_m.value = '';
			document.reservation_form.end_y.value = '';
		}
  
		//idx = starttd.indexOf('x');
		//startd = starttd.substring(idx+1, starttd.length);
		//startm = starttd.substring(0, idx);
		
		idx = starttd.indexOf('.');
    my = starttd.substring(idx+1, starttd.length);
		d = parseInt(starttd.substring(1, idx));
		idx=my.indexOf('.');
		m=parseInt(my.substring(0,idx));
		y=parseInt(my.substring(idx+1,my.length));
		
		startd=d;
		startm=m;
		starty=y;
		
		
		
		

		//idx = endtd.indexOf('x');
		//endd = endtd.substring(idx+1, endtd.length);
		//endm = endtd.substring(0, idx);
		
		idx = endtd.indexOf('.');
    my = endtd.substring(idx+1, endtd.length);
		d = parseInt(endtd.substring(1, idx));
		idx=my.indexOf('.');
		m=parseInt(my.substring(0,idx));
		y=parseInt(my.substring(idx+1,my.length));
		
		endd=d;
		endm=m;
		endy=y;
		
		

		tempd = startd;
		tempm = startm;
		tempy = starty;

		do {
		
			td = document.getElementById('d' + tempd + '.' + tempm + '.' + tempy);
			if(td)
			{
				td.className = td.className.replace('_clicked', '');
				//td.style.backgroundColor='';
				tdid = td.id;
			} else {
				tdid =  'd0.0.'+ starty;
			}

			if(tempm < 12)
			{
			if(tempd < 31)
			{
				tempd++;
			} else {
				tempd = 1;
				tempm++;
			}
			}
			else
        {
          if(tempd < 31)
          {
            tempd++;
          } else {
            tempd = 1;
            tempm = 1;
            tempy++;
          }
        }

		} while(endtd != tdid);
		
		starttd = '';
		endtd = '';
	}
}


function hideCalendar(Year)
{
  document.getElementById("calendar"+(Year+1)).style.display = "none";
}




function makeSubmit()
{
//	document.reservation.ok.type = 'button';
}

function start(Year)
{

	makeCalendarActive(Year);
	makeCalendarActive((Year+1));
	makeSubmit();

}