var controlid=null;
var currdate=null;
var startdate=null;
var enddate=null;
var yy=null;
var mm=null;
var hh=null;
var ii=null;
var currday=null;
var addtime=false;
var today=new Date();
var lastcheckedyear=false;
var lastcheckedmonth=false;

function _cancelBubble(event){
	e=event?event:window.event;
	if(ie){
		e.cancelBubble=true;
	}else{
		e.stopPropagation();
	}
}

function getposition(obj){
	var r=new Array();
	r['x']=obj.offsetLeft +155;
	r['y']=obj.offsetTop -22;
	while(obj=obj.offsetParent){
		r['x']+=obj.offsetLeft;
		r['y']+=obj.offsetTop;
	}
	return r;
}

function loadcalendar(){	
	s='';
	s+='<div id="calendar" style="display:none; position:absolute; z-index:10000;" onclick="_cancelBubble(event)">';
	
	if(ie){
		s+='<iframe width="200" height="160" src="about:blank" style="position:absolute;z-index:-1;"></iframe>';
	}
	
	s+='<div style="width:200px;border:1px solid #333;"><table cellspacing="1" cellpadding="2" bgcolor="#FFFFFF" width="100%" style="text-align: center;">';
		
	s+='<tr align="center" bgcolor="#EEEEEE"><td><a href="#" onclick="refreshcalendar(yy, mm-1);return false" title="上一月">&lt;&lt;</a></td><td colspan="5" style="text-align: center"><a href="#" onclick="showdiv(\'year\');_cancelBubble(event);return false" title="点击选择年份" id="year"></a>&nbsp; - &nbsp;<a id="month" title="点击选择月份" href="#" onclick="showdiv(\'month\');_cancelBubble(event);return false"></a></td><td><A href="#" onclick="refreshcalendar(yy, mm+1);return false" title="下一月">&gt;&gt;</A></td></tr>';
	
	s+='<tr bgcolor="#F1F1F1"><td>日</td><td>一</td><td>二</td><td>三</td><td>四</td><td>五</td><td>六</td></tr>';
	
	for(var i=0;i<6;i++){
		s+='<tr>';
		for(var j=1;j<=7;j++)
			s+="<td id=d"+(i*7+j)+" height=\"19\">0</td>";
			s+="</tr>";
	}
	
	
	s+='<tr id="hourminute"><td colspan="7" align="center"><input type="text" size="1" value="" id="hour" onKeyUp=\'this.value=this.value > 23 ? 23 :zerofill(this.value);controlid.value=controlid.value.replace(/\\d+(\:\\d+)/ig, this.value+"$1")\'> 点			<input type="text" size="1" value="" id="minute" onKeyUp=\'this.value=this.value > 59 ? 59 :zerofill(this.value);controlid.value=controlid.value.replace(/(\\d+\:)\\d+/ig, "$1"+this.value)\'> 分</td></tr>';
	
	s+='</table></div></div>';
	
	s+='<div id="calendar_year" style="display:none;line-height:130%;background:#FFF;border:1px solid #333;position:absolute;z-index:1000;" onclick="_cancelBubble(event)"><div style="float:left;padding:4px">';
	
	for(var k=1950;k<=2020;k++){
		s+=k!=1940&&k%15==0?'</div><div style="float:left;padding:4px">':'';
		s+='<a href="#" onclick="refreshcalendar('+k+', mm);$(\'calendar_year\').style.display=\'none\';return false"><span'+(today.getFullYear()==k?' style="color:#F00"':'')+' id="calendar_year_'+k+'">'+k+'</span></a><br />';
	}
	
	s+='</div></div>';
	s+='<div id="calendar_month" style="display:none;background:#FFF;line-height:130%;border:1px solid #333;padding:4px;position:absolute;z-index:1001;" onclick="_cancelBubble(event)">';
	
	for(var k=1;k<=12;k++){
		s+='<a href="#" onclick="refreshcalendar(yy, '+(k-1)+');$(\'calendar_month\').style.display=\'none\';return false"><span'+(today.getMonth()+1==k?' style="color:#F00"':'')+' id="calendar_month_'+k+'">'+k+(k<10?'&nbsp;':'')+' 月</span></a><br />';
	}
	
	s+='</div>';
	var nElement=document.createElement("div");
	nElement.innerHTML=s;
	document.getElementsByTagName("body")[0].appendChild(nElement);
	
	document.onclick=function(event){
		$('calendar').style.display='none';
		$('calendar_year').style.display='none';
		$('calendar_month').style.display='none';
	}

	$('calendar').onclick=function(event){
		_cancelBubble(event);
		$('calendar_year').style.display='none';
		$('calendar_month').style.display='none';
	}
}

function parsedate(s){
	/(\d+)\-(\d+)\-(\d+)\s*(\d*):?(\d*)/.exec(s);
	var m1=(RegExp.$1&&RegExp.$1>1899&&RegExp.$1<2101)?parseFloat(RegExp.$1):today.getFullYear();
	var m2=(RegExp.$2&&(RegExp.$2>0&&RegExp.$2<13))?parseFloat(RegExp.$2):today.getMonth()+1;
	var m3=(RegExp.$3&&(RegExp.$3>0&&RegExp.$3<32))?parseFloat(RegExp.$3):today.getDate();
	var m4=(RegExp.$4&&(RegExp.$4>-1&&RegExp.$4<24))?parseFloat(RegExp.$4):0;
	var m5=(RegExp.$5&&(RegExp.$5>-1&&RegExp.$5<60))?parseFloat(RegExp.$5):0;/(\d+)\-(\d+)\-(\d+)\s*(\d*):?(\d*)/.exec("0000-00-00 00\:00");
	return new Date(m1,m2-1,m3,m4,m5);
}

function settime(d){
	$('calendar').style.display='none';
	controlid.value=yy+"-"+zerofill(mm+1)+"-"+zerofill(d)+(addtime?' '+zerofill($('hour').value)+':'+zerofill($('minute').value):'');
}

function showcalendar(event,controlid1,addtime1,startdate1,enddate1){
	controlid=controlid1;
	addtime=addtime1;
	startdate=startdate1?parsedate(startdate1):false;
	enddate=enddate1?parsedate(enddate1):false;
	currday=controlid.value?parsedate(controlid.value):today;
	hh=currday.getHours();
	ii=currday.getMinutes();
	var p=getposition(controlid);
	$('calendar').style.display='block';
	$('calendar').style.left=p['x']+'px';
	$('calendar').style.top=(p['y']+20)+'px';
	_cancelBubble(event);
	refreshcalendar(currday.getFullYear(),currday.getMonth());
	
	if(lastcheckedyear!=false){
		$('calendar_year_'+lastcheckedyear).style.backgroundColor='#FFA';
		$('calendar_year_'+today.getFullYear()).style.backgroundColor='#A7E137';
	}

	if(lastcheckedmonth!=false){
		$('calendar_month_'+lastcheckedmonth).style.backgroundColor='#FFA';
		$('calendar_month_'+(today.getMonth()+1)).style.backgroundColor='#A7E137';
	}
	$('calendar_year_'+currday.getFullYear()).style.backgroundColor='#FFA';
	$('calendar_month_'+(currday.getMonth()+1)).style.backgroundColor='#FFA';
	$('hourminute').style.display=addtime?'':'none';
	lastcheckedyear=currday.getFullYear();
	lastcheckedmonth=currday.getMonth()+1;
}
	
function refreshcalendar(y,m){
	var x=new Date(y,m,1);
	var mv=x.getDay();
	var d=x.getDate();
	var dd=null;
	yy=x.getFullYear();
	mm=x.getMonth();
	$("year").innerHTML=yy;
	$("month").innerHTML=mm+1>9?(mm+1):'0'+(mm+1);
	for(var i=1;i<=mv;i++){
		dd=$("d"+i);
		dd.innerHTML="&nbsp;";
		dd.style.backgroundColor="#F9F9F9";
	}
	
	while(x.getMonth()==mm){dd=$("d"+(d+mv));
	dd.innerHTML='<a href="#" onclick="settime('+d+');return false">'+d+'</a>';
	if(x.getTime()<today.getTime()||(enddate&&x.getTime()>enddate.getTime())||(startdate&&x.getTime()<startdate.getTime())){
		dd.style.backgroundColor='#F9F9F9';
		}else{
			dd.style.backgroundColor='#F9F9F9';
		}
		
	if(x.getFullYear()==today.getFullYear()&&x.getMonth()==today.getMonth()&&x.getDate()==today.getDate()){
		dd.style.backgroundColor='#A7E137';
		dd.firstChild.title='今天';
	}
	
	if(x.getFullYear()==currday.getFullYear()&&x.getMonth()==currday.getMonth()&&x.getDate()==currday.getDate()){
		dd.style.backgroundColor='#FFA';
	}
	
	x.setDate(++d);}
	while(d+mv<=42){
		dd=$("d"+(d+mv));
		dd.innerHTML="&nbsp;";
		d++;
	}
	
	if(addtime){
		$('hour').value=zerofill(hh);
		$('minute').value=zerofill(ii);
	}
}

function showdiv(id){
	var p=getposition($(id));
	$('calendar_'+id).style.left=p['x']+'px';
	$('calendar_'+id).style.top=(p['y']+16)+'px';
	$('calendar_'+id).style.display='block';
}

function zerofill(s){
	var s=parseFloat(s.toString().replace(/(^[\s0]+)|(\s+$)/g,''));
	s=isNaN(s)?0:s;return(s<10?'0':'')+s.toString();
}

loadcalendar();