var Calendar = function (targetInput, targetHelp, booleanNotAuto, options) {
	// 最小宽度 最大宽度 主体透明度 主体边框默认样式 主体边框默认颜色 主体背景色 投影透明度 默认投影颜色 今日前景 今日背景 普通over前景 普通over背景 今日over前景 今日over背景 输入框是否只读 是否隐藏select
	this.options = options ? options : [140, 800, 0.95, "solid", "#EEE", "#FFF", 3, 3, 0.2, "#000", "#444", "#F6F8FD", "#333", "#F1F5FC", "#000", "#EFF3FB", true, true];
	this.toFixedZero = function (n) {
		return n < 10 ? "0" + n : n;
	};
	this.booleanNotAuto = booleanNotAuto;
	this.createContainer = function (elementTargetElement) {
		var getCssTextWHLT = function (arrayWHLT) {
			var stringCssText = ";";
			var arrayWHLTTpl = ["width", "height", "left", "top"];
			for (var i = 0; i < 4; i++) {
				if (arrayWHLT[i] != "auto") {
					stringCssText += arrayWHLTTpl[i] + ":" + arrayWHLT[i] + (typeof arrayWHLT[i] == "string" ? "" : "px") + ";";
				}
			}
			return stringCssText;
		};
		var arrayBorderDirection = ["Top", "Right", "Bottom", "Left"];
		var arrayTargetBorderWidth = [];
		var stringTargetBorderCssText = ";background-color:" + (elementTargetElement.style.backgroundColor ? elementTargetElement.style.backgroundColor : this.options[5]) + ";";
		for (var i = 0; i < 4; i++) {
			var stringBorderWidth = elementTargetElement.style["border" + arrayBorderDirection[i] + "Width"];
			arrayTargetBorderWidth[i] = stringBorderWidth ? stringBorderWidth.replace("px", "") * 1 : 2;
			stringTargetBorderCssText += "border-" + arrayBorderDirection[i].toLowerCase() + "-width:" + arrayTargetBorderWidth[i] + "px;";
			var stringBorderStyle = elementTargetElement.style["border" + arrayBorderDirection[i] + "Style"];
			stringTargetBorderCssText += "border-" + arrayBorderDirection[i].toLowerCase() + "-style:" + (stringBorderStyle ? stringBorderStyle : this.options[3]) + ";";
			var stringBorderColor = elementTargetElement.style["border" + arrayBorderDirection[i] + "Color"];
			stringTargetBorderCssText += "border-" + arrayBorderDirection[i].toLowerCase() + "-color:" + (stringBorderColor ? stringBorderColor : this.options[4]) + ";";
		}
		var intCurrentWidth = elementTargetElement.clientWidth;
		intCurrentWidth = intCurrentWidth < this.options[0] ? this.options[0] : intCurrentWidth;
		intCurrentWidth = this.options[1] < intCurrentWidth ? this.options[1] : intCurrentWidth;
		
		var stringMainOpacity = "";
		var stringShadowOpacity = "";
		var stringShadowLimited = ";font-size:0px;line-height:0px;";
		if (navigator.appName == "Microsoft Internet Explorer") {
			stringMainOpacity = "filter:alpha(opacity=" + this.options[2] * 100 + ");";
			stringShadowOpacity = "filter:alpha(opacity=" + this.options[8] * 100 + ");";
		}
		else {
			stringMainOpacity = "opacity:" + this.options[2] + ";";
			stringShadowOpacity = "opacity:" + this.options[8] + ";";
		}
		
		var elementSpan = document.createElement("span");
		elementTargetElement.parentNode.insertBefore(elementSpan, elementTargetElement);
		var intTargetHeight = elementTargetElement.clientHeight + arrayTargetBorderWidth[0] + arrayTargetBorderWidth[2] + (elementTargetElement.offsetTop - elementSpan.offsetTop);
		elementSpan.style.position = "relative";
		elementSpan.style.display = "none";
		elementSpan.style.width = "0px";
		
		var elementDiv = document.createElement("div");
		elementDiv.style.position = "absolute";
		elementDiv.style.cssText += getCssTextWHLT([intCurrentWidth, "auto", 0, intTargetHeight]) + stringTargetBorderCssText + stringMainOpacity;
		elementSpan.appendChild(elementDiv);
		
		var elementShadowDivRight = document.createElement("div");
		elementShadowDivRight.style.position = "absolute";
		elementShadowDivRight.style.cssText += getCssTextWHLT([this.options[6], elementDiv.clientHeight + arrayTargetBorderWidth[1] + arrayTargetBorderWidth[3], intCurrentWidth + arrayTargetBorderWidth[0] + arrayTargetBorderWidth[2], intTargetHeight + this.options[7]]) + "background-color:" + (elementTargetElement.style.borderRightColor ? elementTargetElement.style.borderRightColor : this.options[9]) + ";" + stringShadowOpacity + stringShadowLimited;
		elementSpan.appendChild(elementShadowDivRight);
		
		var elementShadowDivBottom = document.createElement("div");
		elementShadowDivBottom.style.position = "absolute";
		elementShadowDivBottom.style.cssText += getCssTextWHLT([intCurrentWidth + arrayTargetBorderWidth[0] + arrayTargetBorderWidth[2] - this.options[6], this.options[7], this.options[6], intTargetHeight + elementDiv.clientHeight + arrayTargetBorderWidth[1] + arrayTargetBorderWidth[3]]) + "background-color:" + (elementTargetElement.style.borderBottomColor ? elementTargetElement.style.borderBottomColor : this.options[9]) + ";" + stringShadowOpacity + stringShadowLimited;
		elementSpan.appendChild(elementShadowDivBottom);
		
		var elementBorderDiv = document.createElement("div");
		elementBorderDiv.style.position = "absolute";
		elementBorderDiv.style.cssText += getCssTextWHLT([intCurrentWidth < elementTargetElement.clientWidth ? intCurrentWidth : elementTargetElement.clientWidth, arrayTargetBorderWidth[2] + arrayTargetBorderWidth[0], arrayTargetBorderWidth[3], intTargetHeight - arrayTargetBorderWidth[2]]) + ";background-color:" + (elementTargetElement.style.backgroundColor ? elementTargetElement.style.backgroundColor : this.options[5]) + ";" + stringShadowLimited;
		if (elementTargetElement.style.borderBottomWidth) {
			elementSpan.appendChild(elementBorderDiv);
		}
		
		this.elementSpan = elementSpan;
		this.elementDiv = elementDiv;
		this.elementShadowDivRight = elementShadowDivRight;
		this.elementShadowDivBottom = elementShadowDivBottom;
	};
	this.romance = function (element) {
		element.style.cursor = "pointer";
		element.style.cssText += ";padding:2px 4px; line-height: 16px;";
		element.calendar = this;
		if (element.today) {
			element.style.color = this.options[10];
			element.style.backgroundColor = this.options[11];
		}
		element.onmouseover = function () {
			if (this.today) {
				this.style.color = this.calendar.options[14];
				this.style.backgroundColor = this.calendar.options[15];
			}
			else {
				this.style.color = this.calendar.options[12];
				this.style.backgroundColor = this.calendar.options[13];
			}
			if (parseInt(this.date) == this.date) {
				this.calendar.keepShowing = true;
			}
		};
		element.onmouseout = function () {
			if (this.today) {
				this.style.color = this.calendar.options[10];
				this.style.backgroundColor = this.calendar.options[11];
			}
			else {
				this.style.color = "";
				this.style.backgroundColor = "";
			}
			this.calendar.keepShowing = false;
		};
		element.onmousedown = function () {
			if (parseInt(this.date) == this.date) {
				this.calendar.keepShowing = true;
				var arrayDate = this.calendar.date;
				var date = new Date(arrayDate[0], arrayDate[1] + this.date, arrayDate[2]);
				this.calendar.date = [date.getFullYear(), date.getMonth(), date.getDate()];
				this.calendar.elementTarget.value = this.calendar.date[0].toString() + "-" + this.calendar.toFixedZero(this.calendar.date[1] + 1) + "-" + this.calendar.toFixedZero(this.calendar.date[2]);
				this.calendar.resetCalendar(this.calendar.date);
			}
			else {
				this.calendar.keepShowing = false;
				this.calendar.date = this.date;
				this.calendar.elementTarget.value = this.calendar.date[0].toString() + "-" + this.calendar.toFixedZero(this.calendar.date[1] + 1) + "-" + this.calendar.toFixedZero(this.calendar.date[2]);
			}
		};
	};
	this.resetShadow = function () {
		var intDivHeight = this.elementDiv.clientHeight + this.elementDiv.style.borderTopWidth.replace("px", "") * 1 + this.elementDiv.style.borderBottomWidth.replace("px", "") * 1;
		this.elementShadowDivRight.style.height = intDivHeight + "px";
		this.elementShadowDivBottom.style.top = this.elementDiv.style.top.replace("px", "") * 1 + intDivHeight + "px";
	};
	
	this.resetCalendar = function (arrayDate) {
		this.elementDiv.innerHTML = "";
		
		var stringCssTextButton = "width:12px; font-size:18px;";
		var stringCssTextTable = "width:100%; color:#999; font-size:12px; text-align:center;";
		var tableTitle = document.createElement("table");
		tableTitle.style.cssText += stringCssTextTable;
		tableTitle.cellPadding = 0;
		tableTitle.cellSpacing = 0;
		
		var trHeader = tableTitle.insertRow(0);
		trHeader.style.cssText += "background-color:#F3F3F3; line-height:20px;";
		
		var tdPreviousYear = trHeader.insertCell(0);
		tdPreviousYear.style.cssText += stringCssTextButton;
		tdPreviousYear.innerHTML = "&laquo;";
		tdPreviousYear.date = -12;
		this.romance(tdPreviousYear);
		
		var tdPreviousMonth = trHeader.insertCell(1);
		tdPreviousMonth.innerHTML = "&lsaquo;";
		tdPreviousMonth.style.cssText += stringCssTextButton;
		tdPreviousMonth.date = -1;
		this.romance(tdPreviousMonth);
		
		var tdYearAndMonth = trHeader.insertCell(2);
		tdYearAndMonth.innerHTML = arrayDate[0] + "年" + this.toFixedZero(arrayDate[1] + 1) + "月";
		
		var tdNextYear = trHeader.insertCell(3);
		tdNextYear.innerHTML = "&rsaquo;";
		tdNextYear.style.cssText += stringCssTextButton;
		tdNextYear.date = 1;
		this.romance(tdNextYear);
		
		var tdNextMonth = trHeader.insertCell(4);
		tdNextMonth.innerHTML = "&raquo;";
		tdNextMonth.style.cssText += stringCssTextButton;
		tdNextMonth.date = 12;
		this.romance(tdNextMonth);
		
		this.elementDiv.appendChild(tableTitle);
		
		var tableDays = document.createElement("table");
		tableDays.style.cssText += stringCssTextTable;
		tableDays.cellPadding = 0;
		tableDays.cellSpacing = 0;
		
		var trHeaderDays = tableDays.insertRow(0);
		var days = ["日", "一", "二", "三", "四", "五", "六"];
		for (var i = 0; i < 7; i++) {
			var tdHeaderDay = trHeaderDays.insertCell(i);
			tdHeaderDay.innerHTML = days[i];
			tdHeaderDay.style.cssText += ";padding:2px 4px; line-height: 16px;";
		}
		
		var day = new Date(arrayDate[0], arrayDate[1], 1).getDay();
		var dates = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
		if (arrayDate[1] == 1 && ((arrayDate[0] % 4 == 0 && arrayDate[0] % 100 != 0) || arrayDate[0] % 400 == 0)) {
			dates[1] = 29;
		}
		
		var pos = 0;
		var currentLine = 1;
		var currentTr = tableDays.insertRow(currentLine);
		for (var i = 0; i < day; i++) {
			var currentTd = currentTr.insertCell(i);
			pos++;
		}
		for (var i = 1; i < dates[arrayDate[1]] + 1; i++) {
			if (pos == 0) {
				currentLine++;
				currentTr = tableDays.insertRow(currentLine);
			}
			currentTd = currentTr.insertCell(pos);
			currentTd.innerHTML = i.toString();
			currentTd.today = i == arrayDate[2] ? true : false;
			currentTd.date = [arrayDate[0], arrayDate[1], i];
			this.romance(currentTd);
			pos++;
			pos = pos == 7 ? 0 : pos;
		}
		if (pos != 0) {
			for (var i = pos; i < 7; i++) {
				var currentTd = currentTr.insertCell(i);
			}
		}
		this.elementDiv.appendChild(tableDays);
		this.resetShadow();
	};
	this.hideSelects = function () {
		if (navigator.appVersion.indexOf("MSIE 6.0") != -1) {
			var selects = document.getElementsByTagName("select");
			var length = selects.length;
			for (var i = 0; i < length; i++) {
				selects[i].style.visibility = "hidden";
			}
		}
	}

	this.showSelects = function () {
		if (navigator.appVersion.indexOf("MSIE 6.0") != -1) {
			var selects = document.getElementsByTagName("select");
			var length = selects.length;
			for (var i = 0; i < length; i++) {
				selects[i].style.visibility = "";
			}
		}
	}
	this.showForce = function () {
		if (this.options[17]) {
			this.hideSelects();
		}
		this.elementSpan.style.display = "";
		this.resetShadow();
	};
	
	this.show = function () {
		if (this.booleanNotAuto) {
			return;
		}
		if (this.options[17]) {
			this.hideSelects();
		}
		this.elementSpan.style.display = "";
		this.resetShadow();
	};
	
	this.hide = function () {
		if (this.options[17]) {
			this.showSelects();
		}
		this.elementSpan.style.display = "none";
	};
	
	this.showStandalone = function () {
		arguments.callee.object.show();
	};
	this.showStandalone.object = this;
	this.bind = function (elementTarget, elementTargetHelp, booleanAuto) {
		if (typeof elementTarget == "string") {
			var elementTargetElement = document.getElementById(elementTarget);
		}
		else {
			var elementTargetElement = elementTarget;
		}
		this.elementTarget = elementTargetElement;
		this.createContainer(elementTargetElement);
		
		elementTargetElement.readOnly = this.options[16];
		elementTargetElement.autocomplete = "off";
		elementTargetElement.calendar = this;
		if (elementTargetElement.value == "" || elementTargetElement.value.match(/^\d{4}-\d{1,2}-\d{1,2}$/) == null) {
			var now = new Date();
			elementTargetElement.value = now.getFullYear().toString() + "-" + this.toFixedZero(now.getMonth() + 1) + "-" + this.toFixedZero(now.getDate());
			this.date = [now.getFullYear(), now.getMonth(), now.getDate()];
		}
		else {
			var arrayDate = elementTargetElement.value.split("-");
			this.date = [arrayDate[0] * 1, arrayDate[1] * 1 - 1, arrayDate[2] * 1];
		}
		
		this.resetCalendar(this.date);
		
		if (!booleanAuto) {
			elementTargetElement.onfocus = function () {
				this.calendar.show();
			};
			
			elementTargetElement.onblur = function () {
				if (this.calendar.keepShowing) {
					this.focus();
					setTimeout(this.calendar.showStandalone, 1);
				}
				else {
					this.calendar.hide();
				}
			};
		}
		if (elementTargetHelp) {
			if (typeof elementTargetHelp == "string") {
				var elementTargetElementHelp = document.getElementById(elementTargetHelp);
			}
			else {
				var elementTargetElementHelp = elementTargetHelp;
			}
			elementTargetElementHelp.style.cursor = "pointer";
			elementTargetElementHelp.calendar = this;
			elementTargetElementHelp.onclick = function () {
				this.calendar.elementTarget.focus();
				this.calendar.showForce();
			};
		}
	};
	
	this.bind(targetInput, targetHelp);
};