var DatePicker=new Class({Implements:[Options],options:{dayChars:2,dayNames:['Niedziela','Poniedziałek','Wtorek','Środa','Czwartek','Piątek','Sobota'],daysInMonth:[31,28,31,30,31,30,31,31,30,31,30,31],format:'yyyy-mm-dd',monthNames:['Styczeń','Luty','Marzec','Kwiecień','Maj','Czerwiec','Lipiec','Sierpień','Wrzesień','Październik','Listopad','Grudzień'],startDay:7,yearOrder:'asc',yearRange:2,yearStart:(new Date().getFullYear())},initialize:function(dp,options){this.setOptions(options);if(dp.get('value')!=''){this.then=new Date(dp.value);this.today=new Date();}else{this.then=this.today=new Date();}
this.oldYear=this.year=this.then.getFullYear();this.oldMonth=this.month=this.then.getMonth();this.oldDay=this.then.getDate();this.nowYear=this.today.getFullYear();this.nowMonth=this.today.getMonth();this.nowDay=this.today.getDate();this.options.monthNames=(this.options.monthNames&&this.options.monthNames.length==12?this.options.monthNames:this.options.monthNames)||this.options.monthNames;this.options.daysInMonth=(this.options.daysInMonth&&this.options.daysInMonth.length==12?this.options.daysInMonth:this.options.daysInMonth)||this.options.daysInMonth;this.options.dayNames=(this.options.dayNames&&this.options.dayNames.length==7?this.options.dayNames:this.options.dayNames)||this.options.dayNames;this.dp=dp;this.dp.set('id',dp.get('name'));this.container=this.calendar=this.active=false;this.dp.addEvents({'click':function(){this.create()}.bind(this),'focus':function(){this.create()}.bind(this)});},create:function(fade){if(this.calendar)return false;fade=($type(fade)=='boolean')?fade:true;if(Browser.Engine.trident&&Browser.Engine.version<=5){fade=false;}
if(Browser.Engine.trident&&Browser.Engine.version<=4){$$('select').addClass('dp_hide');}
this.container=new Element('div',{'class':'dp_container'}).injectBefore(this.dp);if(fade){this.container.fade('hide');}
this.calendar=new Element('div',{'class':'dp_cal'}).injectInside(this.container);var date=new Date();if(this.month&&this.year){date.setFullYear(this.year,this.month,1);}else{this.month=date.getMonth();this.year=date.getFullYear();date.setDate(1);}
this.year%4==0?this.options.daysInMonth[1]=29:this.options.daysInMonth[1]=28;var firstDay=(1-(7+date.getDay()-this.options.startDay)%7);monthSel=new Element('select',{'id':this.dp.get('id')+'_monthSelect'});this.options.monthNames.each(function(item,index){monthSel.options[index]=new Element('option',{value:index});monthSel.options[index].set('text',item);if(this.month==index)monthSel.options[index].set('selected','selected');}.bind(this));yearSel=new Element('select',{'id':this.dp.get('id')+'_yearSelect'}); var years=new Array();if(this.options.yearOrder=='desc'){for(var y=this.options.yearStart;y>(this.options.yearStart-this.options.yearRange-1);y--){years.include(y);}}else{for(var y=this.options.yearStart;y<(this.options.yearStart+this.options.yearRange+1);y++){years.include(y);}}
years.each(function(y,i){yearSel.options[i]=new Element('option',{value:y});yearSel.options[i].set('text',y);if(this.year==y)yearSel.options[i].set('selected','selected');}.bind(this));calTable=new Element('table');calTableThead=new Element('thead');calSelRow=new Element('tr');calSelCell=new Element('th',{'colspan':'7'});monthSel.injectInside(calSelCell);yearSel.injectInside(calSelCell);calSelCell.injectInside(calSelRow);calSelRow.injectInside(calTableThead);calTableTbody=new Element('tbody');calDayNameRow=new Element('tr');for(var i=0;i<this.options.dayNames.length;i++){calDayNameCell=new Element('th');calDayNameCell.appendText(this.options.dayNames[(this.options.startDay+i)%7].substr(0,this.options.dayChars));calDayNameCell.injectInside(calDayNameRow);}
calDayNameRow.injectInside(calTableTbody);while(firstDay<=this.options.daysInMonth[this.month]){calDayRow=new Element('tr');for(i=0;i<7;i++){if((firstDay<=this.options.daysInMonth[this.month])&&(firstDay>0)){calDayCell=new Element('td',{'class':this.dp.get('id')+'_calDay','axis':this.year+'|'+(parseInt(this.month)+1)+'|'+firstDay}).appendText(firstDay).injectInside(calDayRow);}else{calDayCell=new Element('td',{'class':'dp_empty'}).appendText(' ').injectInside(calDayRow);}
if((firstDay==this.oldDay)&&(this.month==this.oldMonth)&&(this.year==this.oldYear)){calDayCell.addClass('dp_selected');}

if((firstDay==this.nowDay)&&(this.month==this.nowMonth)&&(this.year==this.nowYear)){calDayCell.addClass('dp_today');}
firstDay++;}
calDayRow.injectInside(calTableTbody);}
calTableThead.injectInside(calTable);calTableTbody.injectInside(calTable);calTable.injectInside(this.calendar);if(fade){this.container.fade('in');}
$$('td.'+this.dp.get('id')+'_calDay').each(function(el){el.addEvents({'mouseover':function(){el.addClass('dp_roll');},'mouseout':function(){el.removeClass('dp_roll');},'click':function(){ds=el.axis.split('|');this.dp.value=this.formatValue(ds[0],ds[1],ds[2]);if(typeof(przeliczDni) == "function"){przeliczDni();}this.remove();}.bind(this)});}.bind(this));[monthSel,yearSel].each(function(elmt){elmt.addEvents({'focus':function(){this.active=true;}.bind(this),'change':function(){this.month=monthSel.value;this.year=yearSel.value;this.remove(false);this.create(false);this.active=false;this.dp.focus();}.bind(this)});}.bind(this));this.dp.addEvent('blur',function(){(function(){if(!this.active){this.remove();}}.bind(this)).delay(500);}.bind(this))},formatValue:function(year,month,day){var dateStr='';if(day<10)day='0'+day;if(month<10)month='0'+month;dateStr=this.options.format.replace(/dd/i,day).replace(/mm/i,month).replace(/yyyy/i,year);this.month=this.oldMonth=''+(month-1)+'';this.year=this.oldYear=year;this.oldDay=day;
return dateStr;},remove:function(fade){fade=($type(fade)=='boolean')?fade:true;if(Browser.Engine.trident&&Browser.Engine.version<=5){fade=false;}
if($type(this.container)=='element'){if(fade!=false){this.container.fade('out');}else{this.container.dispose();}}
this.active=this.container=this.calendar=false;$$('select.dp_hide').removeClass('dp_hide');}});Element.implement({DatePicker:function(options){new DatePicker(this,options);return this;}});