(function() {

	// jQuery
	if (window.jQuery) {

		// ajax 默认设置
		$.ajaxSetup({
			async: true,	// 异步调用
			cache: false	// 禁用缓存
		});

		// 扩展功能
		$.extend({

			// 倒计时
			countDown: function(options) {
				var defaults = {
					name: "default",
					time: 60,
					onTimer: null,
					onTimeout: null
				};
				options = $.extend(defaults, options);
				var timer = function() {
					options.onTimer && options.onTimer.call(null, options.time);
					if (options.time <= 0) {
						options.onTimeout && options.onTimeout.call(null);
					} else {
						$["countDownTimer_" + options.name] = setTimeout(function() {
							options.time--;
							timer();
						}, 1000);
					}
				};
				timer();
			},

			// 取消倒计时
			cancelCountDown: function(name) {
				clearTimeout(this["countDownTimer_" + (name || "default")]);
			}

		});

	}
}) ();

// 返回当前时间（秒值）
function now() {
	var dt = new Date();
	dt.setMilliseconds(0);
	return dt.getTime() / 1000;
}

// 返回今天日期（秒值）
function today() {
	var dt = new Date();
	dt.setHours(0, 0, 0, 0);
	return dt.getTime() / 1000;
}

// 返回日期，按 yyyy-MM-dd 或 yyyy-MM-dd HH:mm:ss 格式参数
function getDate(dtStr) {
	dtStr = $.trim(dtStr);
	var a;
	var date, time;
	if (dtStr.indexOf(" ") != -1) {
		a = dtStr.split(" ");
		date = a[0];
		time = a[1];
	} else {
		date = dtStr;
		time = "00:00:00";
	}
	a = date.split("-");
	var y = parseInt(a[0]);
	var M = parseInt(a[1]) - 1;
	var d = parseInt(a[2]);
	a = time.split(":");
	var h = a[0];
	var m = a[1];
	var s = a.length == 3 ? a[2] : 0;
	return new Date(y, M, d, h, m, s);
}

// 返回日期时间（秒值），按 yyyy-MM-dd 或 yyyy-MM-dd HH:mm:ss 格式参数
function getDateTime(dtStr) {
	var dt = getDate(dtStr);
	return dt.getTime() / 1000;
}

// 格式化日期（参数一：日期对象或秒值；参数二：格式[可选]）
function formatDate() {
	var date = arguments[0];
	var format = arguments[1] || "yyyy-MM-dd HH:mm:ss";
	if (typeof date == "number") {
		date = new Date(date * 1000);
	}
	var paddNum = function(num) {
		num += "";
		return num.replace(/^(\d)$/, "0$1");
	};
	var config = {
		yyyy : date.getFullYear(),
		yy : date.getFullYear().toString().substring(2),
		M  : date.getMonth() + 1,
		MM : paddNum(date.getMonth() + 1),
		d  : date.getDate(),
		dd : paddNum(date.getDate()),
		HH : paddNum(date.getHours()),
		mm : paddNum(date.getMinutes()),
		ss : paddNum(date.getSeconds())
	};
	return format.replace(/([a-z])(\1)*/ig, function(m){return config[m];});
}

// 返回一个变量是否数组
function isArray(value) {
	if (typeof Array.isArray === "function") {
		return Array.isArray(value);
	} else {
		return Object.prototype.toString.call(value) === "[object Array]";
	}
}

// 返回 min - max 之间的随机整数
function getRandomInt(min, max) {
	return parseInt((Math.random() * (max - min + 1)) + min);
}

// 返回一个指定长度的随机字符串
function getRandomString(len) {
	var base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
	var str = "";
	for (var i=0; i<len; i++) {
		var n = getRandomInt(1, base.length) - 1;
		str += base.substr(n, 1);
	}
	return str;
}

// 返回随机颜色
function getRandomColor() {
	return '#'+('00000'+(Math.random()*0x1000000<<0).toString(16)).substr(-6);
}

// 获取 URL 参数
function getParameter(name) {
	var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
	var r = window.location.search.substr(1).match(reg);
	if (r != null) return r[2]; return null;
}

// 设置/替换 URL 参数
function setParameter(url, name, value) {
	url = url.replace(/(#.*)/ig, "");
	var reg = new RegExp("([\?&])" + name + "=([^&]*)(?=&|$)", "i");
	if (reg.test(url)) {
		return url.replace(reg, "$1" + name + "=" + value);
	} else {
		return url + (url.indexOf("?") == -1 ? "?" : "&") + name + "=" + value;
	}
}

// 移除 URL 参数
function removeParameter(url, name) {
	url = url.replace(/(#.*)/ig, "");
	var reg = new RegExp("([\?&])" + name + "=([^&]*)(?=&|$)", "i");
	if (reg.test(url)) {
		url = url.replace(reg, "");
		if (url.indexOf("?") == -1) url = url.replace("&", "?");
	}
	return url;
}

// 格式化 JSON（参数一：json 对象；参数二：选项[可选] 空格数量）
function formatJSON(json, space) {
	var seen = [];
	return JSON.stringify(json, function(key, val) {
		if (!val || typeof val !== "object") {
			return val;
		}
		if (seen.indexOf(val) !== -1) {
			return "[Circular]";
		}
		seen.push(val);
		return val;
	}, space || 4);
}

// 返回是否手机号
function isPhoneNo(phone) {
	return /^(13|14|15|16|17|18|19)[0-9]{9}$/.test(phone);
}

// 返回本地会话 ID
function getSessionId() {
	if (!sessionStorage.sessionid) {
		sessionStorage.sessionid = getRandomString(40);
	}
	return sessionStorage.sessionid;
}

// tip
function showTip() {
	var content = arguments[0];
	var time = 2000;
	var callback = null;
	switch (arguments.length) {
		case 2:
			if (typeof arguments[1] == "number") time = arguments[1];
			if (typeof arguments[1] == "function") callback = arguments[1];
			break;
		case 3:
			time = arguments[1];
			callback = arguments[2];
			break;
	}
	showDialog("tip", content);
	setTimeout(function() {
		closeDialog();
		callback && callback.call(null);
	}, time);
}

// alert
function showAlert(content, ok) {
	showDialog("alert", content, function() {
		closeDialog();
		ok && ok.call(null);
	});
}

// confirm
function showConfirm(content, ok, cancel) {
	showDialog("confirm", content, function() {
		closeDialog();
		ok && ok.call(null);
	}, function() {
		closeDialog();
		cancel && cancel.call(null);
	});
}

// 显示对话框
function showDialog(type, content, ok, cancel) {
	$("#dialog .content").text(content);
	switch (type) {
		case "tip":
			$("#dialog .action").hide();
			$("#dialog .ok").off().hide();
			$("#dialog .cancel").off().hide();
			break;
		case "alert":
			$("#dialog .action").show();
			$("#dialog .ok").on("click", ok).show();
			$("#dialog .cancel").off().hide();
			break;
		case "confirm":
			$("#dialog .action").show();
			$("#dialog .ok").on("click", ok).show();
			$("#dialog .cancel").on("click", cancel).show();
			break;
	}
	$("#dialog").show();
	$("#mask").show();
}

// 关闭对话框
function closeDialog() {
	$("#dialog .content").empty();
	$("#dialog .ok").off();
	$("#dialog").hide();
	$("#mask").hide();
}

// Base64
var Base64={table:['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'],UTF16ToUTF8:function(str){var res=[],len=str.length;for(var i=0;i<len;i++){var code=str.charCodeAt(i);if(code>0x0000&&code<=0x007F){res.push(str.charAt(i))}else if(code>=0x0080&&code<=0x07FF){var byte1=0xC0|((code>>6)&0x1F);var byte2=0x80|(code&0x3F);res.push(String.fromCharCode(byte1),String.fromCharCode(byte2))}else if(code>=0x0800&&code<=0xFFFF){var byte1=0xE0|((code>>12)&0x0F);var byte2=0x80|((code>>6)&0x3F);var byte3=0x80|(code&0x3F);res.push(String.fromCharCode(byte1),String.fromCharCode(byte2),String.fromCharCode(byte3))}else if(code>=0x00010000&&code<=0x001FFFFF){}else if(code>=0x00200000&&code<=0x03FFFFFF){}else{}};return res.join('')},UTF8ToUTF16:function(str){var res=[],len=str.length;var i=0;for(var i=0;i<len;i++){var code=str.charCodeAt(i);if(((code>>7)&0xFF)==0x0){res.push(str.charAt(i))}else if(((code>>5)&0xFF)==0x6){var code2=str.charCodeAt(++i);var byte1=(code&0x1F)<<6;var byte2=code2&0x3F;var utf16=byte1|byte2;res.push(Sting.fromCharCode(utf16))}else if(((code>>4)&0xFF)==0xE){var code2=str.charCodeAt(++i);var code3=str.charCodeAt(++i);var byte1=(code<<4)|((code2>>2)&0x0F);var byte2=((code2&0x03)<<6)|(code3&0x3F);var utf16=((byte1&0x00FF)<<8)|byte2;res.push(String.fromCharCode(utf16))}else if(((code>>3)&0xFF)==0x1E){}else if(((code>>2)&0xFF)==0x3E){}else{}};return res.join('')},encode:function(str){if(!str){return''};var utf8=this.UTF16ToUTF8(str);var i=0;var len=utf8.length;var res=[];while(i<len){var c1=utf8.charCodeAt(i++)&0xFF;res.push(this.table[c1>>2]);if(i==len){res.push(this.table[(c1&0x3)<<4]);res.push('==');break};var c2=utf8.charCodeAt(i++);if(i==len){res.push(this.table[((c1&0x3)<<4)|((c2>>4)&0x0F)]);res.push(this.table[(c2&0x0F)<<2]);res.push('=');break};var c3=utf8.charCodeAt(i++);res.push(this.table[((c1&0x3)<<4)|((c2>>4)&0x0F)]);res.push(this.table[((c2&0x0F)<<2)|((c3&0xC0)>>6)]);res.push(this.table[c3&0x3F])};return res.join('')},decode:function(str){if(!str){return''};var len=str.length;var i=0;var res=[];while(i<len){code1=this.table.indexOf(str.charAt(i++));code2=this.table.indexOf(str.charAt(i++));code3=this.table.indexOf(str.charAt(i++));code4=this.table.indexOf(str.charAt(i++));c1=(code1<<2)|(code2>>4);c2=((code2&0xF)<<4)|(code3>>2);c3=((code3&0x3)<<6)|code4;res.push(String.fromCharCode(c1));if(code3!=64){res.push(String.fromCharCode(c2))};if(code4!=64){res.push(String.fromCharCode(c3))}};return this.UTF8ToUTF16(res.join(''))}};