var _ESONCalendar = window.ESONCalendar = {
	hasFoot: false,
	weeks: "日一二三四五六",
	months: "一,二,三,四,五,六,七,八,九,十,十一,十二",
	start: 1950,
	end: 2050,
	color: {
		caption: "#A4B9D7",
		border: "#C0D0E8",
		tablebg: "#F6F6F6",
		selectedbg: "#FF9900",
		foot_co: "#003366",
		selectedco: "#ffffff"
	},
	dateBox: [],
	splitChar: "-",
	splitChar2: ":",
	hotInput: null,
	initli: false,
	init: function() {
		return this.addStyle().addUI().hide();
	},
	uanv_tool_CE: function(type, id, parent, className, HTML) {
		var obj = document.createElement(type.toUpperCase());
		id && (obj.id = id);
		className && (obj.className = className);
		HTML && (obj.innerHTML = HTML);
		parent || (parent = document.body);
		return parent.appendChild(obj);
	},
	uanv_tool_getWeek: function(date, i) {
		var tmp = new Date(date);
		tmp.setDate(i);
		return tmp.getDay();
	},
	uanv_tool_isIn: function(o, parent) {
		try {
			while (o != parent && o != document.body) {
				o = o.parentNode
			};
			return o != document.body;
		} catch (ex) {
			return false;
		}
	},
	onselect: function(d) {
		this.hotInput && (this.hotInput.value = d.y + this.splitChar + ("0" + d.m).substr(("0" + d.m).length - 2, 2) + this.splitChar + ("0" + d.d).substr(("0" + d.d).length - 2, 2));
		this.hide()
	},
	addStyle: function() {
		var cssText = "#ESONCalendar_Win{background-color:" + this.color.caption + ";position:absolute;z-index:99999;width:190px;box-shadow:0px 0px 5px 2px #ccc}";
		cssText += "#ESONCalendar_caption{text-align:center; height:24px; line-height:24px;padding:5px 0;background-color:" + this.color.caption + ";overflow:hidden;filter: progid:DXImageTransform.Microsoft.gradient( GradientType= 0 , startColorstr = '#686868', endColorstr = '#444' );"
					+"-ms-filter: progid:DXImageTransform.Microsoft.gradient( GradientType = 0,startColorstr = '#686868', endColorstr = '#444' );"
					+"background-image: -webkit-linear-gradient(top,#686868 0,#444 100%);"
					+"background-image: -mox-linear-gradient(top,#686868 0,#444 100%);"
					+"background-image: -o-linear-gradient(top,#686868 0,#444 100%);"
					+"background-image: linear-gradient(to bottom,#686868 0,#444 100%);}";
		cssText += ".clear{clear:both}";
		cssText += "#selMonth{width:80px}";
		cssText += "#selYear{margin-right:5px; width:80px}";
		cssText += "#ESONCalendar_table{width:190px;background-color:" + this.color.tablebg + ";border-collapse:collapse;border:1px solid #bbb}";
		cssText += "#ESONCalendar_table th{font-weight:normal;filter: progid:DXImageTransform.Microsoft.gradient( GradientType= 0 , startColorstr = '#fefefe', endColorstr = '#dddddd' );"
					+"-ms-filter: progid:DXImageTransform.Microsoft.gradient( GradientType = 0,startColorstr = '#fefefe', endColorstr = '#dddddd' );"
					+"background-image: -webkit-linear-gradient(top,#fefefe 0,#dddddd 100%);"
					+"background-image: -mox-linear-gradient(top,#fefefe 0,#dddddd 100%);"
					+"background-image: -o-linear-gradient(top,#fefefe 0,#dddddd 100%);"
					+"background-image: linear-gradient(to bottom,#fefefe 0,#dddddd 100%);}";
		cssText += "#ESONCalendar_week{background-color:" + this.color.border + "}";
		cssText += "#ESONCalendar_week th{font-size:12px;height:14px;width:26px;}";
		cssText += "#dateBox{font:normal 14px /120% 'arial';}";
		cssText += "#dateBox th{width:16px;height:22px;border:1px #bbb solid; font-size:12px;font-weight:bold;}";
		cssText += "#dateBox .unselected{cursor:pointer;background-color:" + this.color.tablebg + ";}";
		cssText += "#dateBox .sunday{cursor:pointer;background-color:" + this.color.tablebg + ";color:red}";
		cssText += "#dateBox .disabled{cursor:normal; background-image:none; background-color:#eee;color:#999}";
		cssText += "#dateBox .current,#dateBox .selected{cursor:pointer;background-image:none;background-color:#666;color:#fff;}";
		cssText += "#ESONCalendar_foot{padding:2px 0 2px 0;line-height:130%;text-align:center;font-size:11px;color:" + this.color.foot_co + ";background-color:" + this.color.border + "}";
		cssText += "#ESONCalendar_Win iframe{position:absolute;z-index:-1;top:0;left:0}";
		var STYLE = document.createElement('style');
		STYLE.setAttribute("type", "text/css");
		STYLE.styleSheet && (STYLE.styleSheet.cssText = cssText) || STYLE.appendChild(document.createTextNode(cssText));
		document.getElementsByTagName('head')[0].appendChild(STYLE);
		return this;
	},
	addUI: function() {
		if (this.initli) {
			return;
		}
		this.Win = this.uanv_tool_CE("div", "ESONCalendar_Win");
		//KillSelectIframe=this.uanv_tool_CE("IFRAME",false,this.Win);
		var _caption = this.uanv_tool_CE("div", "ESONCalendar_caption", this.Win);
		var selYear = this.uanv_tool_CE("select", "selYear", _caption);
		var selMonth = this.uanv_tool_CE("select", "selMonth", _caption);
		this.selMonth = selMonth;
		this.selYear = selYear;
		selMonth.onchange = selYear.onchange = function() {
			ESONCalendar.dateUp(new Date(selYear.value, selMonth.value, ESONCalendar.d))
		};
		for (var i = 0; i < 12; i++) {
			var tmp = new Option(this.months.split(",")[i] + "月", i);
			selMonth.options.add(tmp);
		};
		for (var i = this.start; i <= this.end; i++) {
			var tmp = new Option(i, i);
			selYear.options.add(tmp);
		};
		this.uanv_tool_CE("div", false, _caption, "clear");
		var table = this.uanv_tool_CE("table", "ESONCalendar_table", this.Win);
		var tbody = this.uanv_tool_CE("tbody", false, table);
		var tr = this.uanv_tool_CE("tr", "ESONCalendar_week", tbody);
		for (var i = 0; i < 7; i++) {
			var th = this.uanv_tool_CE("th", false, tr, false, new String(this.weeks).charAt(i));
		}
		this.updatebox(6);
		if (this.hasFoot) {
			this.foot = this.uanv_tool_CE("div", "ESONCalendar_foot", this.Win, false, this.footText);
			this.foot.innerHTML = "UANV_日历 版权作者所有";
		}
		//KillSelectIframe.frameBorder=0;
		//KillSelectIframe.width=this.Win.offsetWidth;KillSelectIframe.height=this.Win.offsetHeight;
		document.onclick = document.body.onclick = function(e) {
			e || (e = window.event);
			var src = e.target || e.srcElement;
			var tmp = src.nodeName.toUpperCase();
			if (tmp == "HTML" || tmp == "BODY") {
				return ESONCalendar.hide();
			}
			if (src == ESONCalendar.hotInput || ESONCalendar.uanv_tool_isIn(src, ESONCalendar.Win)) {
				return;
			}
			ESONCalendar.hide();
		};
		this.initli = true;
		return this;
	},
	updatebox : function(lines){
		this.dateBox.length=0;
		var tbody = document.getElementById("dateBox");
		if(!tbody){
			tbody = this.uanv_tool_CE("tbody", "dateBox", document.getElementById("ESONCalendar_table"));
		}else{
			while(tbody.lastChild){
				tbody.removeChild(tbody.lastChild);
			}
		}
		for (var i = 0; i < lines; i++) {
			tr = this.uanv_tool_CE("tr", false, tbody);
			for (var j = 0; j < 7; j++) {
				this.dateBox[i * 7 + j] = this.uanv_tool_CE("th", false, tr, false, "&nbsp;");
			}
		};
	},
	dateUp: function(date, first) {
		var space = this.uanv_tool_getWeek(date, 1);
		var m2d = 31,
			index = 1;
		this.y = date.getFullYear(), this.m = date.getMonth() + 1, this.d = date.getDate();
		this.h = date.getHours();
		this.mi = date.getMinutes();
		this.s = date.getSeconds();
		this.selMonth.options[this.m - 1].selected = "selected";
		this.selYear.options[this.y - this.start].selected = "selected";
		var isRN = (this.y % 4 == 0 && this.y % 4 != 100 || this.y % 100 == 0 && this.y % 400 == 0);
		if (/-4|-6|-9|-11/.test("-" + this.m)) {
			m2d = 30
		};
		if (this.m == 2) {
			m2d = isRN ? 29 : 28
		};
		var days=m2d + space,lines = Math.ceil(days/7), boxs = lines * 7;
		this.updatebox(lines);
		for (var i = 0; i < boxs; i++) {
			var _this = this.dateBox[i];
			_this.isSunday = _this.className = _this.isInMonth = _this.onmouseover = _this.onmouseout = _this.onclick = null;
			if (i < space || i > (days - 1)) {
				_this.uanv_tool_isInMonth = false;
				_this.innerHTML = "&nbsp;";
				_this.className = "disabled";
				continue
			};
			_this.innerHTML = index++;
			_this.className = "unselected";
			_this.isInMonth = true;
			var week = this.uanv_tool_getWeek(date, _this.innerHTML);
			if (week == 0 || week == 6) {
				_this.className = "sunday";
				_this.isSunday = true;
			}
			if (first && (index - 1) == this.d) {
				_this.className = "selected";
			}
			_this.onmouseover = function() {
				if (this.className != "selected") this.className = "current"
			};
			_this.onmouseout = function() {
				if (this.className != "selected") this.className = this.isSunday ? "sunday" : "unselected"
			};
			_this.onclick = function() {
				var allD = ESONCalendar.dateBox;
				for (var i = 0; i < allD.length; i++) {
					var _for = allD[i];
					_for.className = "";
					if (_for.isInMonth) {
						_for.className = "unselected";
					}
					if (_for.isSunday) {
						_for.className = "sunday";
					}
				};
				this.className = "selected";
				ESONCalendar.d = this.innerHTML;
				ESONCalendar.onselect({
					y: ESONCalendar.y,
					m: ESONCalendar.m,
					d: this.innerHTML,
					h: ESONCalendar.h,
					mi: ESONCalendar.mi,
					s: ESONCalendar.s
				});
			};
		};
		return this;
	},
	showTo: function(obj) {
		var oldObj = obj;
		for (var pos = {
			x: 0,
			y: 0
		}; obj; obj = obj.offsetParent) {
			pos.x += obj.offsetLeft;
			pos.y += obj.offsetTop
		};
		this.Win.style.left = pos.x + "px";
		this.Win.style.top = (pos.y + 2 + oldObj.offsetHeight) + "px";
		this.Win.style.display = "";
		return this;
	},
	bind: function(input) {
		if (!this.initli) {
			this.init();
		}
		"string" == typeof(input) && (input = document.getElementById(input));
		if (!input.type || input.type.toUpperCase() != "TEXT") {
			return this;
		}
		if (typeof $ != "undefined") {
			$(input).focus(function() {
				var dates = this.value.split(ESONCalendar.splitChar);
				var bindD = this.value.length > 0 ? new Date(dates[0], dates[1] - 1, dates[2]) : new Date();
				ESONCalendar.dateUp(bindD, true);
				ESONCalendar.showTo(ESONCalendar.hotInput = this);
			});
		} else {
			input.onfocus = function() {
				var dates = this.value.split(ESONCalendar.splitChar);
				var bindD = this.value.length > 0 ? new Date(dates[0], dates[1] - 1, dates[2]) : new Date();
				ESONCalendar.dateUp(bindD, true);
				ESONCalendar.showTo(ESONCalendar.hotInput = this);
			};
		}
		return this;
	},
	hide: function() {
		this.Win.style.display = "none";
		return this
	},
	setInfo: function(v) {
		this.foot.innerHTML = v;
		return this
	}
};;