/**
 *	本文件主要放一些常用的js函数
 */
function go(url) {
	window.location = href = url;
	return false;
}

function traffic()
{
	for(var i = 0; i < arguments.length; i++) {
		$.getJSON(arguments[i] + "&t=" + ((new Date).getTime()) + "&=?");
	}

}

function islogin() {
	return $.cookie('username') == null ? false : true;
}

function loginDo(func, f) {
	var fn,
		flag = f == undefined ? true : false;
	switch (typeof func)
	{
		case 'function' :
			fn = func
			break;
		case 'string' :
			eval('fn = function(){' + func + '}');
			break;
		default :
			fn = function(){};
			break;
	}
	if (islogin()) {
		fn()
	} else {
		if(flag) {
			//$.cookie('loginedDo',fn.toString());
			$.popup.show({url:'/index.php?do=user_account_simpleForm',width:372,height:400,title:'电源网会员登录'})
		} else {
			$.cookie('backurl',location.href,{path: '/', domain: 'dianyuan.com'});
			location.href = 'http://www.dianyuan.com/index.php?do=user_account_form';
		}
	}
}

function loginedRun(fn){
	fn = typeof fn == 'function' ? fn : function(){};
	if(islogin()){
		fn()
	} else {
		$.popup.show({
			url : 'index.php?do=user_account_simpleForm',
			width : 372,
			height : 400,
			title : '电源网会员登录',
			flag : 'simple_login'
		});
	}
}

function checkCheckbox() {
	var flag = false;
	$('input[type=checkbox]').each(function(){
		if ($(this).attr('checked')) {
			flag = true;
			return false;
		}
	});
	return flag;
}

function openwinx(url,name,w,h)
{
    window.open(url,name,"top=100,left=400,width=" + w + ",height=" + h + ",toolbar=no,menubar=no,scrollbars=yes,resizable=no,location=no,status=no");
}


function strlen(str) { //中文等两个字符
		var len = 0;
		var a = str.split("");
		for (var i=0;i<a.length;i++) {
			if (a[i].charCodeAt(0)<299) {
				len++;
			} else {
				len+=2;
			}
		}
		return len;
}

function jsIncAction(url,id)
{
	$("#"+id).html("<img src=/image/ico/loader.gif />");
	$("#"+id).load(url+"&rand="+Math.random(),
	  function($data)   {
		//todo
	  }
	);
}

function setcookie(cookieName, cookieValue, seconds, path, domain, secure)
{
	var expires = new Date();
	expires.setTime(expires.getTime() + seconds * 1000);
	domain = '';
	path = '';
	document.cookie = escape(cookieName) + '=' + escape(cookieValue)
		+ (expires ? '; expires=' + expires.toGMTString() : '')
		+ (path ? '; path=' + path : '/')
		+ (domain ? '; domain=' + domain : '')
		+ (secure ? '; secure' : '');
}

function getcookie(name)
{
	var cookie_start = document.cookie.indexOf(name);
	var cookie_end = document.cookie.indexOf(";", cookie_start);
	return cookie_start == -1 ? '' : unescape(document.cookie.substring(cookie_start + name.length + 1, (cookie_end > cookie_start ? cookie_end : document.cookie.length)));
}

/** loadOption(select, optionData, currValue) |  loadOption(select, optionData)
 *  给select装载option, optionData可以是url,也可以是json, select可以是select的id，也可以是对象。
 */
function loadOption() {
	var selectId   = arguments[0];
	var selectObj  = {};

	if (typeof (selectId) == 'string') {
		selectObj = $('#' + selectId);
	} else {
		selectObj = $(selectId);
	}

	var optionData = arguments[1];
	var currValue  = '';
	if (arguments.length >= 3) {
		var currValue = arguments[2] + "";
		var separator = arguments[3] ? arguments[3] : ",";
	    currValue     = currValue.split(separator);
	}
	var html = '';
	if (typeof (optionData) == 'string') {
		optionData += '&t=' + (new Date).getTime();
		$.get(optionData,'',function(data) {
			for (var i in data) {
				html += '<option value="' + i + '"';
				html += in_array(i, currValue) ? ' selected' : '';
				html += '>' + data[i] + '</option>';
			}
			selectObj.html(html);
		}, 'json');
	}
	if (typeof (optionData) == 'object') {
		for (var i in optionData) {
			html += '<option value="' + i + '"';
//			html += (i == currValue) ? ' selected' : '';
			html += in_array(i, currValue) ? ' selected' : '';
			html += '>' + optionData[i] + '</option>';
			selectObj.html(html);
		}
	}
}

function in_array(value, arr) {
	var sign = false;
	for (var i in arr) {
		if (value == arr[i]) {
			sign = true;
			break;
		}
	}
	return sign;
}

String.prototype.trim = function() {
    return this.replace(/(^[\s\t\xa0\u3000]+)|([\u3000\xa0\s\t]+$)/g, "")
};
String.prototype.byteLength = function() {
    return this.replace(/[^\u0000-\u007f]/g, "\u0061\u0061").length
};

/**
 * 预装载图片 images可以是单个图片,也可以是数组
 */
function loadImage(imageSrc) {
	var imageObj = new Image();
	if (typeof (imageSrc) == 'string') {
		imageObj.src = imageSrc;
	}

  	if (typeof (imageSrc) == 'object') { //数组
		for (i in imageSrc) {
			imageObj.src = imageSrc[i];
		}
	}
}