$.extend(jQuery.datepicker,{_generateMonthYearHeader:function(inst,drawMonth,drawYear,minDate,maxDate,selectedDate,secondary,monthNames,monthNamesShort){minDate=(inst.rangeStart&&minDate&&selectedDate<minDate?selectedDate:minDate);var changeMonth=this._get(inst,'changeMonth');var changeYear=this._get(inst,'changeYear');var showMonthAfterYear=this._get(inst,'showMonthAfterYear');var html='<div class="ui-datepicker-title">';var monthHtml='';if(secondary||!changeMonth)
monthHtml+='<span class="ui-datepicker-month">'+monthNames[drawMonth]+'</span> ';else{var years=this._get(inst,'yearRange').split(':');var year=0;var endYear=0;if(years.length!=2){year=drawYear-10;endYear=drawYear+10;}else if(years[0].charAt(0)=='+'||years[0].charAt(0)=='-'){year=drawYear+parseInt(years[0],10);endYear=drawYear+parseInt(years[1],10);}else{year=parseInt(years[0],10);endYear=parseInt(years[1],10);}
year=(minDate?Math.max(year,minDate.getFullYear()):year);endYear=(maxDate?Math.min(endYear,maxDate.getFullYear()):endYear);monthHtml+='<select class="ui-datepicker-month" '+'onchange="DP_jQuery.datepicker._selectMonthYear(\'#'+inst.id+'\', this, \'\');" '+'onclick="DP_jQuery.datepicker._clickMonthYear(\'#'+inst.id+'\');"'+'>';for(;year<=endYear;year++){var inMinYear=(minDate&&minDate.getFullYear()==year);var inMaxYear=(maxDate&&maxDate.getFullYear()==year);for(var month=0;month<12;month++){if((!inMinYear||month>=minDate.getMonth())&&(!inMaxYear||month<=maxDate.getMonth())){monthHtml+='<option value="'+month+":"+year+'"'+
((month==drawMonth&&year==drawYear)?' selected="selected"':'')+'>'+monthNames[month]+'&nbsp;&nbsp;'+year+'</option>';}}}
monthHtml+='</select>';}
if(!showMonthAfterYear)
html+=monthHtml+((secondary||changeMonth||changeYear)&&(!(changeMonth&&changeYear))?'&#xa0;':'');if(secondary||!changeYear)
html+='<span class="ui-datepicker-year">'+drawYear+'</span>';if(showMonthAfterYear)
html+=(secondary||changeMonth||changeYear?'&#xa0;':'')+monthHtml;html+='</div>';return html;},_selectMonthYear:function(id,select,period){var target=$(id);var inst=this._getInst(target[0]);var selectedDate=select.options[select.selectedIndex].value.split(':');inst._selectingMonthYear=false;inst['selected'+'Month']=inst['draw'+'Month']=parseInt(selectedDate[0],10);inst['selected'+'Year']=inst['draw'+'Year']=parseInt(selectedDate[1],10);this._notifyChange(inst);this._adjustDate(target);}});