var monthName=new Array("1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월");
var monthDays=new Array(31,28,31,30,31,30,31,31,30,31,30,31);
var todayDate = new Date;

var elementCal;
var fnName;

var fullDayString;
var szYear = todayDate.getYear();
var szMonth = todayDate.getMonth();
var szDay = todayDate.getDate();
var result = new Array();

/*
div.calendar_province													{float:right; width:158px;}
div.calendar_province ul											{width:158px; text-align:center; margin:7px 0 15px 0;}
div.calendar_province ul li											{display:inline;}
div.calendar_province ul li.year_select									{margin-right:2px;}
div.calendar_province ul li.year_select select									{width:76px;}
div.calendar_province ul li.month_select										{margin-left:2px;}
div.calendar_province ul li.month_select select									{width:63px;}
div.calendar_province table.tstyle_organize_calendar										{width:158px; text-align:center; font:12px/120% "Dotum"; color:#5a5a5a;}
div.calendar_province table.tstyle_organize_calendar tr										{}
div.calendar_province table.tstyle_organize_calendar tr th									{font:normal 12px/120% "Dotum";}
div.calendar_province table.tstyle_organize_calendar tr th a								{}
div.calendar_province table.tstyle_organize_calendar tr th.sunday							{color:#f93c3c;}
div.calendar_province table.tstyle_organize_calendar tr th.Saturday							{color:#2959b0;}
div.calendar_province table.tstyle_organize_calendar tr td									{width:24px; height:18px;}
div.calendar_province table.tstyle_organize_calendar tr td a								{}
div.calendar_province table.tstyle_organize_calendar tr td.sunday							{}
div.calendar_province table.tstyle_organize_calendar tr td.sunday a							{color:#f93c3c;}
div.calendar_province table.tstyle_organize_calendar tr td.current							{background:url(/jsp/portal/common/img/customer/calendar_bg.gif) 3px 0 no-repeat;}
div.calendar_province table.tstyle_organize_calendar tr td.current a						{color:#000;}
div.calendar_province table.tstyle_organize_calendar tr td.Saturday							{}
div.calendar_province table.tstyle_organize_calendar tr td.Saturday a						{color:#2959b0;}
 */

function changeCalendar(){
	var szChangeDate = "";
	var elemnetYear = document.getElementById("yearSelect");
	var elemnetMonth = document.getElementById("monthSelect");
	
	var year = elemnetYear.options[elemnetYear.selectedIndex].value;
	var month = elemnetMonth.options[elemnetMonth.selectedIndex].value;
	var day = "01";
	
	szChangeDate = year + month + day;
	
	showCalendar(szChangeDate);
	eval(fnName+"('"+szChangeDate+"')");		
}

function setFullDay(szDate){	
	var year = Number(szDate.substring(0,4));
	var month = Number(szDate.substring(4,6) - 1);
	var day = Number(szDate.substring(6,8));
	var time = todayDate.getTime();		
	var week = "";
	var gap = -(day-1);
	//var result = new Array();
	
	var ddf = new Date(year, month, day); //Date 객체가 생성된 시점의 시간입니다.
	
	switch (ddf.getDay()) {
		case 0: week="일요일"; break;
		case 1: week="월요일"; break;
		case 2: week="화요일"; break;
		case 3: week="수요일"; break;
		case 4: week="목요일"; break;
		case 5: week="금요일"; break;
		case 6: week="토요일"; break;
		default:break;
	}
	
	for(i=gap; i<gap+7; i++) {
		newtime = time + (3600000 * (24*i));
		todayDate.setTime(newtime);
		result[result.length] = setDate(todayDate);
		//alert(result[i]);
	}
	
	
	fullDayString = ddf.getYear()+"년 "+(ddf.getMonth() + 1)+"월 "+ ddf.getDate()+"일 "+week;	 
	
}

function setDate(todayDate) {
	month = todayDate.getMonth()+1;
	date = todayDate.getDate();
	return month+"/"+date;
}

//fnName 함수에서 사용...
function getFullDay(){
	return fullDayString;
}

function returnCalnerdarValue(year, month, day){
	month = month+1;
	
	var firstDay = new Date(szYear,szMonth,1).getDay();
	
	if(Number(month) < 10) month = "0"+month;  
	if(Number(day) < 10) day = "0"+day;
			
	return year+""+month+""+day;
}

function initCalendarSet(id, fn){
	elementCal = document.getElementById(id);
	fnName = fn;
}

function showCalendar(szDate,category){
	setFullDay(szDate);
	if(szDate != "defineded" && szDate != ""&& szDate != "null" && szDate.length == 8){
		
		szYear = Number(szDate.substring(0,4));
		szMonth = Number(szDate.substring(4,6) - 1);
		szDay = Number(szDate.substring(6,8));	
		
		//alert(szYear+"-"+szMonth+"-"+szDay);
	}
	  
	if ((szYear%4 == 0 || szYear%100 == 0) && (szYear%400 == 0))
		monthDays[1]=29; else monthDays[1]=28
				
	var szCalendar = "";
	var selectYear = "";
	var selectMonth = "";
	var monthValue = "";
		
		
	selectYear += '<select id="yearSelect" onchange="changeCalendar()">';
	for(i=(szYear-50); i<=(szYear+50); i++){			
		selectYear += '<option value="'+i+'"';
		if(szYear == i){				
			selectYear +=' selected="selected"';
		}
		selectYear += '>'+i+'년</option>';
	}		
	selectYear += '</select>';
		
	selectMonth += '<select id="monthSelect" onchange="changeCalendar()">';
	for(i=1; i<=12; i++){			
		if(i<10) monthValue ="0"+i;
		else monthValue = i;
			
		selectMonth += '<option value="'+monthValue+'"';
		if((szMonth+1) == i){				
			selectMonth +=' selected="selected"';
		}
		selectMonth += '>'+i+'월</option>';
	}		
	selectMonth += '</select>';	
	
	szCalendar += '<ul>';
	szCalendar += '<li class="year_select">'+selectYear+'</li>';
	szCalendar += '<li class="month_select">'+selectMonth+'</li>';
	szCalendar += '</ul>';
	
	if(category == 'tv'){
		szCalendar += '<table class="tstyle_calendar">';
	}else{
		szCalendar += '<table class="tstyle_organize_calendar">';
	}
	
	szCalendar += '<tr>';
	szCalendar += '<th class="sunday">일</th>';
	szCalendar += '<th>월</th>';
	szCalendar += '<th>화</th>';
	szCalendar += '<th>수</th>';
	szCalendar += '<th>목</th>';
	szCalendar += '<th>금</th>';
	szCalendar += '<th class="Saturday">토</th>';
	szCalendar += '</tr>';
		

	var firstDay = new Date(szYear,szMonth,1).getDay();
	var dayCount = 1;

	szCalendar += '<tr>';
	for (i=0; i<firstDay; i++) szCalendar+='<td></td>';  //공백	
 	for (var i=0;i<monthDays[szMonth];i++){
 		if(dayCount == szDay) {// 오늘
			szCalendar+='<td class="current">' 
  		} else {
  			if(((i+firstDay+1)-8)%7 == 0){//일요일
  				szCalendar += '<td class="sunday">';
			}else if((i+firstDay+1)%7 == 0){//토요일
				szCalendar += '<td class="Saturday">';
			}else{//평일
				szCalendar += "<td>";
			}		  		 
		}
 		 		
		szCalendar += '<a href="#//" onclick="showCalendar(\''+returnCalnerdarValue(szYear,szMonth, dayCount)+'\');'+fnName+'(\''+returnCalnerdarValue(szYear,szMonth, dayCount)+'\');">'+ (dayCount++) +'</a></td>';
 		//szCalendar += '<a href="#//" >'+ (dayCount++) +'</a></td>';			  				  			  	
		if ((i+firstDay+1)%7 == 0 && (dayCount < monthDays[szMonth]+1 )) szCalendar+="</tr><tr>";
  	}
  		
 	var totCells=firstDay+monthDays[szMonth];
 	for (var i=0;i<(totCells>28?(totCells>35?42:35):28)-totCells;i++) szCalendar+="<td></td> ";
 	
 	szCalendar+="</tr></table>"; 	
 	elementCal.innerHTML = szCalendar;
}