功能介绍：
1.正常的日历功能。
2.等等等
3.接收 数组
例如：
复制代码 代码如下:
new Calendar("id").show(
{
"20091120": "今天干了嘛嘛。。。",
"2009320": "今天干了嘛嘛。。。"
}
);

日历提示样式分为3类。
a. 当日
b.当年当月当日提示样式
c.当月当日提示样式
鼠标覆盖在有提示的日期上自动出现提示内容
4.。。。。。
主要分为2种用处。
1.提供一个div或其他element将该容器的id 传给 Calendar。方法名为: show()
例: var cr = Calendar("div1");
cr.show( );
2.提供一个input[type='text'] 的元素 将该元素的 id传给Calendar。方法名为:pop()
例: var cr = Calendar("input2");
cr.pop();
其他的就不多说了。觉得好的话，就支持下。呵呵。
有什么问题或好的想法，请告诉我。谢谢
详细的用法和例子在压缩包里有。
演示地址
http://img.jb51.net/online/calendar/demo-1.html
http://img.jb51.net/online/calendar/demo-2.html
打包下载地址 https://www.jb51.net/codes/12595.html
复制代码 代码如下:
/*
* Calendar
* Language 0: Chinese, 1: English
* 1.Put calendar into the element html use 'show()'
* 2.Pop-up calendar use 'pop()'
*/

var Calendar = function( instanceId, language, startYear, endYear ){
if( typeof instanceId == "string" ){
this.Date = new Date();
this.Year = this.Date.getFullYear();
this.Month = this.Date.getMonth();
this.Week= this.Date.getDay();
this.Today= this.Date.getDate();

this.InstanceId = instanceId;
this.Language= language || 1;
this.StartYear= startYear || this.Year - 5;
this.EndYear= endYear || this.Year + 1;

// If instance is input[type='text'] object
this.popContainer_id = 'popCalendarContainer';

// Message store
this.msgStore = [];

this.caleContainer_id = 'calendarContainer';
this.caleTop = {
today_view_id:'calendarTodayView',
week_view_id:'calendarWeekView',
lq_year_id:'linkQuickYear',
lq_month_id:'linkQuickMonth',
sq_year_id:'selectQuickYear',
sq_month_id:'selectQuickMonth',
close_id:'calendarClose',
prev_month_id:'toPrevMonth',
back_today_id:'backToday',
next_month_id:'toNextMonth'
}
this.daysContainer_id = 'calendarDaysContainer';
this.msgContainer_id = 'calendarTipsContainer';

this.curDayClass = 'calendarCurrentDay';
this.tipDayClass ='calendarTipDay';
this.oldTipDayClass ='calendarOldTipDay';
}
};

Calendar.lang = {
weeks: [
["星期天", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"],
["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]
],
weeksMenu:[
["日","一","二","三","四","五","六"],
["SUN","MON","TUR","WED","THU","FRI","SAT"]
]
};

Calendar.prototype._getViewElement = function(){
// Create page html element
var caleElem = "";
// Create Start
caleElem+= '<div id='+this.caleContainer_id+'>';

// <Top>
caleElem+= '<div id="calendarTopContainer"><table cellpadding="0" cellspacing="0"><tr>';

// Top day view
caleElem+= '<td id='+this.caleTop.today_view_id+'></td>';

// Link or select control
caleElem+= '<td>';
caleElem+= '<div id='+this.caleTop.week_view_id+'></div>';
caleElem+= '<table id="calendarYearMonthContainer" cellpadding="0" cellspacing="0">';
caleElem+= '<tr>';
caleElem+= '<td>';
caleElem+= '<a id='+this.caleTop.lq_year_id+' href="javascript:void(0);"></a>';
caleElem+= '<select id='+this.caleTop.sq_year_id+'></select>';
caleElem+= '</td>';
caleElem+= '<td>.</td>';
caleElem+= '<td>';
caleElem+= '<a id='+this.caleTop.lq_month_id+' href="javascript:void(0);"></a>';
caleElem+= '<select id='+this.caleTop.sq_month_id+'></select>';
caleElem+= '</td>';
caleElem+= '</tr>';
caleElem+= '</table>';
caleElem+= '</td>';

// Quick control
caleElem+= '<td>';
caleElem+= '<div id="calendarCloseContainer">';
caleElem+= '<a id='+this.caleTop.close_id+' href="javascript:void(0);">x</a>';
caleElem+= '</div>';

caleElem+= '<div id="calendarQuickContainer">';
caleElem+= '<a id='+this.caleTop.prev_month_id+' href="javascript:void(0);">&laquo;</a>';
caleElem+= '<a id='+this.caleTop.back_today_id+' href="javascript:void(0);">&nbsp;</a>';
caleElem+= '<a id='+this.caleTop.next_month_id+' href="javascript:void(0);">&raquo;</a>';
caleElem+= '</div>';
caleElem+= '</td>';

caleElem+= '</tr></table cellpadding="0" cellspacing="0"></div>';
// </Top>

// <Calendar View>
caleElem+= '<div id="calendarMainContainer">';
// Week menu
caleElem+= '<div id="calendarWeeksContainer">';
for(var i = 0; i < 7; i ++){
caleElem+= '<span>'+Calendar.lang["weeksMenu"][this.Language][i]+'</span>';
}
caleElem+= '</div>';

// Days view
caleElem+= '<table id='+this.daysContainer_id+' cellpadding="0" cellspacing="0">';
for(var tr = 0; tr < 6; tr ++){
caleElem+= '<tr>';
for(var td = 0; td < 7; td ++){
caleElem+= '<td><span></span></td>';
}
caleElem+= '</tr>';
}
caleElem+= '</table>';

caleElem+= '</div>';
// </Calendar View>

caleElem+= '</div>';

// <Calendar msg>
caleElem+= '<div id='+this.msgContainer_id+'></div>';
// </Calendar msg>

// Create End
return caleElem;
};

Calendar.prototype._getMonthViewArray = function( year, month ){
var monthArray = [];
// From the beginning day of the week
var beginDayOfWeek = new Date( year, month, 1).getDay();

// This month total days
var daysOfMonth = new Date( year, month + 1, 0).getDate();

// 42: 7*6 matrix
for( var i = 0; i < 42; i ++ )
monthArray[i] = "&nbsp;";

for( var j = 0; j < daysOfMonth; j ++ )
monthArray[j + beginDayOfWeek] = j + 1 ;

return monthArray;
};

Calendar.prototype._getOptionIndex = function( selectObject, value ){
for( var j = 0; j < selectObject.options.length; j ++ ){
if( value == selectObject.options[j].value )
return j;
}
};

Calendar.prototype._bindYearIntoSelect = function(){
var oYear = this.find( this.caleTop.sq_year_id );
var oYearLen = 0;
for( var i = this.StartYear; i <= this.EndYear; i ++, oYearLen ++ )
oYear.options[oYearLen] = new Option( i , i );
};

Calendar.prototype._bindMonthIntoSelect = function(){
var oMonth = this.find( this.caleTop.sq_month_id );
var oMonthLen = 0;
for( var i = 0; i < 12; i ++, oMonthLen ++ )
oMonth.options[oMonthLen] = new Option( i + 1 , i + 1 );
};

Calendar.prototype._bindAllData = function( curYear, curMonth ){
var cr = this;
// Bind default Data into 'select:Year'
this._bindYearIntoSelect();

// Bind default Data into 'select:Month'
this._bindMonthIntoSelect();

// Change the 'select:Year' and 'select:Month' value
this.changeSelectValue( curYear, curMonth );

// Bind default data into 'current day view and current week view'
this.find( this.caleTop.week_view_id ).innerHTML = Calendar.lang['weeks'][this.Language][this.Week];
this.find( this.caleTop.today_view_id ).innerHTML = this.Today;

// Get days and bind into 'CalendarMain'
// Add current day class and mouse event
var daysOfMonthArray = this._getMonthViewArray( curYear, curMonth );
var spans = this.find( this.daysContainer_id, "span" );
var curYMD = this.Year + "" + ( this.Month + 1 ) + "" + this.Today;
var selectYear = this.find( this.caleTop.sq_year_id ).value;
var selectMonth = this.find( this.caleTop.sq_month_id ).value;
for( var i = 0; i < spans.length; i ++ ){
spans[i].innerHTML = daysOfMonthArray[i];
var selectYMD = selectYear + "" + selectMonth + "" + spans[i].innerHTML;
if( curYMD == selectYMD )
spans[i].className = this.curDayClass;
else
spans[i].className = "";
}
// If not some days has pop message
if( this.msgStore != "" )
this._initPopMsg( this.msgStore );
}

Calendar.prototype._bindAllEvent = function(){
var cr = this;
// 'toPrevMonth, toNextMonth, backToday, today view' event
this.find( this.caleTop.prev_month_id ).onclick = function(){ cr.goPrevOrNextMonth(this); };
this.find( this.caleTop.next_month_id ).onclick = function(){ cr.goPrevOrNextMonth(this); };
this.find( this.caleTop.back_today_id ).onclick= function(){ cr.backToday(); };
this.find( this.caleTop.today_view_id ).onclick = function(){ cr.backToday(); };

// 'year and month select' onchange event
this.find( this.caleTop.sq_year_id ).onchange = function(){ cr.updateSelect(); };
this.find( this.caleTop.sq_month_id ).onchange= function(){ cr.updateSelect(); };

// Quick link event
this.find( this.caleTop.lq_year_id ).onclick = function(){
cr.showHide( cr.caleTop.lq_year_id, "none" );
cr.showHide( cr.caleTop.sq_year_id, "block" );
};
this.find( this.caleTop.lq_month_id ).onclick = function(){
cr.showHide( cr.caleTop.lq_month_id, "none" );
cr.showHide( cr.caleTop.sq_month_id, "block" );
};

// Remove the link dotted line
var oLink = this.find( this.caleContainer_id, "a" )
for( var i = 0; i < oLink.length; i ++ ){
oLink[i].onfocus = function(){ this.blur(); }
}
}

Calendar.prototype._initCalendar = function(){
this._bindAllEvent();
this._bindAllData( this.Year, this.Month );
};

Calendar.prototype.changeSelectValue = function( year, month ){
var ymArray = [], selectArray = [], linkArray = [];
// Store the 'year' and 'month' to Array
ymArray[0] = year; ymArray[1] = month + 1;

// Store the 'selectYear_id' and 'selectMonth_id' to Array
selectArray[0] = this.caleTop.sq_year_id; selectArray[1] = this.caleTop.sq_month_id;

linkArray[0] = this.caleTop.lq_year_id; linkArray[1] = this.caleTop.lq_month_id;

for( var i = 0; i < selectArray.length; i ++ ){
var selectObject = this.find( selectArray[i] );
// Get the return index
var index = this._getOptionIndex( selectObject, ymArray[i] );
// Reset the 'year', 'month' select and link value
selectObject.options[index].selected = "selected";

this.find( linkArray[i] ).innerHTML = selectObject.value;
}

this.resetLinkSelect();
};

Calendar.prototype.goPrevOrNextMonth = function( obj ){
var curMonthSelect = this.find( this.caleTop.sq_month_id );
var curMonth = parseInt( curMonthSelect.value );
var curYear = this.find( this.caleTop.sq_year_id ).value;
// If 'next' get current month select + 1
// If 'prev' get current month select - 1
if( obj.id == this.caleTop.next_month_id )
curMonthSelect.value = curMonth + 1;
else
curMonthSelect.value = curMonth - 1;

var getNowMonth = curMonthSelect.value - 1;
if( getNowMonth == -1 && curMonth == 1) getNowMonth = 0;
if( getNowMonth == -1 && curMonth == 12 ) getNowMonth = 11;

this._bindAllData( curYear, getNowMonth );
};

Calendar.prototype.updateSelect = function(){
var yearSelectValue = this.find( this.caleTop.sq_year_id ).value;
var monthSelectValue = this.find( this.caleTop.sq_month_id ).value;
// Re-bind Panel Data
this._bindAllData( yearSelectValue, monthSelectValue - 1 );

};

Calendar.prototype.backToday = function(){
this._bindAllData( this.Year, this.Month );
};

Calendar.prototype.find = function( elemId, childTag ){
if( !childTag )
// Return: object
return document.getElementById( elemId );
else
// Return: object array
return this.find( elemId ).getElementsByTagName( childTag );
};

Calendar.prototype.css = function( oId, selector ){
var o = this.find( oId );
selector['left']?o.style.left = selector['left']:"";
selector['top']?o.style.top = selector['top']:"";
selector['position']? o.style.position = selector['position']:"";
}

Calendar.prototype.showHide = function( objectId, dis ){
return this.find( objectId ).style.display = dis;
};

Calendar.prototype.resetLinkSelect = function(){
this.showHide( this.caleTop.sq_year_id, "none" );
this.showHide( this.caleTop.sq_month_id, "none" );
this.showHide( this.caleTop.lq_year_id, "block" );
this.showHide( this.caleTop.lq_month_id, "block" );
};

Calendar.prototype.show = function( msgData ){
var obj = this.find( this.InstanceId );
if( obj ){
obj.innerHTML = this._getViewElement();
// Init calendar event and data
this._initCalendar();

// This function don't have 'close'
this.showHide( this.caleTop.close_id, "none" );
if( typeof msgData == 'object'){
this.msgStore = msgData;
this._initPopMsg( this.msgStore );
}
}
};

Calendar.prototype._initPopMsg = function(){
var cr = this;
var selectYear = this.find( this.caleTop.sq_year_id ).value;
var selectMonth = this.find( this.caleTop.sq_month_id ).value;
var daysOfMonthArray = this._getMonthViewArray( selectYear, selectMonth );
var spans = this.find( this.daysContainer_id, "span" );
for( var key in this.msgStore ){
var keyMD = key.substring( 4 );
var keyY = key.substring( 0, 4 );
for( var i = 0; i < spans.length; i ++){
var getMD = selectMonth + "" + spans[i].innerHTML;
if( getMD == keyMD ){
if( selectYear == keyY )
spans[i].className = this.tipDayClass +" "+ keyY;
else
spans[i].className = this.oldTipDayClass +" "+ keyY;
spans[i].onmouseover = function(){
var hoverDate = this.className.split(" ")[1] + "" + selectMonth + "" + this.innerHTML;
var y = this.className.split(" ")[1],
m = selectMonth,
d = this.innerHTML;
cr.find( cr.msgContainer_id ).innerHTML = cr._getMsgHtml( y, m, d );
cr.showHide( cr.msgContainer_id, "block" );
}
}
}
}
cr.find( cr.caleContainer_id ).onmouseout = function(){
cr.showHide( cr.msgContainer_id, "none" );
}
};

Calendar.prototype._getMsgHtml =function( y, m, d ){
var date = y + m + d;
var showDate = y + "-" + m + "-" + d;
var msgHtml = '<div>'+showDate+':</div><div>'+ this.msgStore[date] +'</div>';
return msgHtml;
}

Calendar.prototype.pop = function(){
var cr = this;
var obj= this.find( this.InstanceId );
if( obj ){
// Instance object click then pop-up the calendar
obj.onclick = function( e ){
var e = window.event || e;
var x = e.x || e.pageX,
y = e.y || e.pageY;
if( !cr.find( cr.popContainer_id ) ){
// Create the pop-up div
var oDiv = document.createElement("div");
oDiv.id = cr.popContainer_id;
document.body.appendChild( oDiv );
}else{
cr.showHide( cr.popContainer_id, "block" );
}
cr.find( cr.popContainer_id ).innerHTML = cr._getViewElement();

// Init calendar event and data
cr._initCalendar();

// Set days click event
cr.popDaysClickEvent( obj );

// Set position
cr.css( cr.popContainer_id, {position: "absolute", left: x + "px", top: y + "px"});

// Close panel event
cr.find( cr.caleTop.close_id ).onclick = function(){ cr.showHide( cr.popContainer_id, "none" ); };
};
}
};

Calendar.prototype.popDaysClickEvent = function( obj ){
var cr = this;
var spans = cr.find( cr.daysContainer_id, "span" );
for( var i = 0; i < spans.length; i ++ )
spans[i].onclick = function(){
if( this.innerHTML != "&nbsp;" ){
var getYear = cr.find( cr.caleTop.sq_year_id ).value;
var getMonth = cr.find( cr.caleTop.sq_month_id ).value;
obj.value = getYear +"-"+ getMonth +"-" + this.innerHTML;
cr.showHide( cr.popContainer_id, "none" );
}
}
};