/**
 * @file
 *
 * 收集统计数据
 *
 * @copyright Copyright (c) 2005 - 2008 ISOSHU All Rights Reserved . (http://www.isoshu.com)
 * @author bottle hhyisw@163.com
 * @version $Id$
 */

/**
 * @file
 *
 * 返回当前客户端时间
 *
 */
function _stat_getTime(){ 
	var now	= new Date(); 
	var y	= now.getYear();
	var m	= now.getMonth()+1;
	var d	= now.getDate();
	var h	= now.getHours(); 
	var i	= now.getMinutes(); 
	var s	= now.getSeconds();
	return y+"-"+m+"-"+d+"-"+h+"-"+i+"-"+s;
}

/**
 * 读取cookie
 */
function _stat_readCookie(name){
  var cookieValue = "";
  var search = name + "=";
  if(document.cookie.length > 0)
  { 
    offset = document.cookie.indexOf(search);
    if (offset != -1)
    { 
      offset += search.length;
      end = document.cookie.indexOf(";", offset);
      if (end == -1) end = document.cookie.length;
      cookieValue = unescape(document.cookie.substring(offset, end))
    }
  }
  return cookieValue;
}

/**
 * 写入cookie
 */
function _stat_writeCookie(name, value, hours){
  var expire = "";
  if(hours != null)
  {
    expire = new Date((new Date()).getTime() + hours * 3600000);
    expire = "; expires=" + expire.toGMTString();
  }
  document.cookie = name + "=" + escape(value) + expire + "domain=;" + "path=/;";
}

var _stat_pageUrl;		// 请求的URL地址
var _stat_referer;		// 请求的来路地址
var _stat_language;		// 客户端语言
var _stat_colorDepth;	// 屏幕色深
var _stat_screenSize;	// 屏幕分辨率
var _stat_charset;		// 页面字符集编码
var _stat_firstTime;	// 开始时间
var _stat_lastTime;		// 结束时间
var _stat_returnCount;	// 计数器
var _stat_returnTime;

// 计数器 BEGIN
_stat_returnCount = _stat_readCookie('_stat_returnCount');
_stat_returnCount = _stat_returnCount == '' ? 0 : _stat_returnCount;

_stat_returnTime = _stat_readCookie('_stat_returnTime');
if(_stat_returnTime == ''){
	_stat_returnTime = _stat_getTime();
	_stat_writeCookie('_stat_returnTime', _stat_returnTime, 10000);
}

var temp = _stat_returnTime.split('-');
var _stat_returnTimeDate    = new Date(temp[0], temp[1]-1, temp[2], temp[3], temp[4], temp[5]);
var _stat_nowTimeDate       = new Date();

if(_stat_nowTimeDate - _stat_returnTimeDate >= 5 * 86400){
	_stat_returnCount++;
	_stat_writeCookie('_stat_returnCount', _stat_returnCount, 10000);
	_stat_writeCookie('_stat_returnTime', _stat_getTime(), 10000);
}else{
	_stat_returnCount = 0;
}
// 计数器 END

if(self == top){
	_stat_pageUrl	= escape(location.href);
	_stat_referer	= escape(document.referrer);
}else{
	_stat_pageUrl	= escape(top.location.href);
	_stat_referer	= escape(top.document.referrer);
}


_stat_firstTime = _stat_readCookie('_stat_firstTime');
if(_stat_firstTime == ''){
	_stat_firstTime = _stat_getTime();
	_stat_lastTime	= _stat_firstTime;
	_stat_writeCookie('_stat_firstTime', _stat_firstTime, 10000);
}else{
	_stat_lastTime = _stat_getTime();
}

_stat_language	    = (navigator.systemLanguage ? navigator.systemLanguage : navigator.language);
_stat_colorDepth	= screen.colorDepth;
_stat_screenSize	= screen.width + '*' + screen.height;
_stat_charset		= document.charset;

var _stat_server_uri = 'http://pub.isoshu.com/stat/post.html?'
+ '&pageurl='       + _stat_pageUrl
+ '&referer='       + _stat_referer
+ '&language='      + _stat_language
+ '&color='         + _stat_colorDepth
+ '&screensize='    + _stat_screenSize
+ '&firsttime='     + _stat_firstTime
+ '&lasttime='      + _stat_lastTime
+ '&charset='       + _stat_charset
+ '&timezone='      + (new Date()).getTimezoneOffset()/60;

if(_stat_returnCount != 0){
	_stat_server_uri += '&rcount=' + _stat_returnCount;
}

document.write('<script src="' + _stat_server_uri + '"></script>');