//获取URL中 ? 号后面的变量
function getQueryString(variable){
	var searchString = location.search;
	var pos = searchString.indexOf ("?");
	var splitPos;
	var result;
	variable += "=";
	if(pos==0){
		searchString = searchString.substr(pos,searchString.length);
		pos = searchString.indexOf(variable);
		if(pos!=-1){
			searchString = searchString.substr(pos,searchString.length);
			splitPos = searchString.indexOf("&");
			if(splitPos!=-1){
				result = searchString.substr(0,splitPos);
			}else{
				result = searchString;
			}
			result = result.replace(variable,"");
		}
	}else{
		result = "";
	}
	return result;
}

/*
function getCookie(name)
{
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while (i < clen)
	{
		var j = i + alen;
		if (document.cookie.substring(i, j) == arg){
			var offset = j;
			var endstr = document.cookie.indexOf (";", offset);
			if (endstr == -1)
				endstr = document.cookie.length;
			return unescape(document.cookie.substring(offset, endstr));
		}
		i = document.cookie.indexOf(" ", i) + 1;
		if (i == 0) break;
	}
	return null;
}

function setCookie(name, value)
{
	var expdate = new Date();
	var argv = setCookie.arguments;
	var argc = setCookie.arguments.length
	var expires = (argc > 2) ? argv[2] : null;var path = (argc > 3) ? argv[3] : null
	var domain = (argc > 4) ? argv[4] : null;var secure = (argc > 5) ? argv[5] : false
	if(expires!=null)expdate.setTime(expdate.getTime() + ( expires * 1000 ))
	document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString()))
	+((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
	+((secure == true) ? "; secure" : "")
}
*/

function SetCookie(name, value)
//设定Cookie值
{
var expdate = new Date();
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = 300000;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 ))
document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString()))
+((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
+((secure == true) ? "; secure" : "");
}

function GetCookie(name)
//获得Cookie的原始值
{
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen)
{
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return GetCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}

function GetCookieVal(offset)
//获得Cookie解码后的值
{
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}

function top_domain() {
	var domain
	var tmp=location.host.split('.')
	var len=tmp.length
	if(len>2 && len!=4)
	domain = '.'+tmp[len-2]+'.'+tmp[len-1]
	else domain=location.host
	return domain
}

function setDefaultV23(City,CityID)
{
	if(confirm("请问您要把默认城市设为“" + City + "”吗？\n设为默认城市后，将在 V23 首页显示“" + City + "”的天气。")){
		alert("已经把默认城市设为“" + City + "”，下次打开 V23 时会出现“" + City + "”的天气预报。");
		SetCookie("v23tq",CityID);
	}
}

function searchCity(city)
{
	if(city==""){
		alert('请输入要查询天气的城市！');
		return;
	}
	for (var i=0; i<allCity2Code.length; i++)
	{
		if(allCity2Code[i][0] == city){
			location.href='tq.htm?city=' + allCity2Code[i][1];
			return;
		}
	}
	alert('对不起，没有搜索到您要查询城市的天气信息！' + city);
}