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

//设定Cookie值
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" : "");
}

//删除Cookie
function DelCookie(name)
{
    var exp = new Date();
    exp.setTime (exp.getTime() - 1);
    var cval = GetCookie (name);
    document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString();
}

//获得Cookie的原始值
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)
            return GetCookieVal (j);
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break;
    }
    return null;
}

function SearchObjectEndsWith(idName)
{
    for(i=0;i<document.all.length;i++)
    { 
        var id=document.all[i].id;
        if(id.length<idName.length)
            continue;
        if(id.substr(id.length-idName.length,idName.length)==idName)
            return document.all[i];
    }
    return null;
}



//打开弹出式窗口
function OpenWindow(url,title,width,height) 
{ 
    param = "width="+width+",height="+height+", toolbar=no, menubar=no, scrollbars=no, resizable=no,location=no, status=no,center=yes";
    window.open (url,title,param)
}

//广告条处理
function InitAd(x,y,layerName) 
{
    document.getElementById(layerName).style.posTop = -200; //设置onLoad事件激发以后，广告层相对于固定后的y方向位置 
    document.getElementById(layerName).style.visibility = 'visible'; //设置层为可见 visible,hidden
    MoveLayer(x,y,layerName);//调用函数MoveLayer() 
} 

function HideAd(layerName)
{
    document.getElementById(layerName).style.visibility = 'hidden'; //设置层为可见 visible,hidden
}

function GetBodyScrollTop()
{
    if(document.documentElement.scrollTop!=0)
      return document.documentElement.scrollTop;
    else
      return document.body.scrollTop;
}

function GetBodyWidth()
{
  if(document.documentElement.width!=0)
    return document.documentElement.width;
  else
    document.body.width;
}

function MoveLayer(x,y,layerName) 
{ 
    var scrollTop=GetBodyScrollTop();
    var diff = (scrollTop + y - document.all.AdLayer.style.posTop)*.40; 
    var newy = scrollTop + y - diff; 
    eval("document.all." + layerName + ".style.posTop = newy"); 
    eval("document.all." + layerName + ".style.posLeft = x");//移动广告层 
    window.setTimeout("MoveLayer("+x+","+y+   ",'"+layerName+"');", 20);//设置20毫秒后再调用函数MoveLayer()     
} 


//字符串替换
function ReplaceSubstring(inputString, fromString, toString) 
{
    var temp = inputString;
    if (fromString == "") 
    {
        return inputString;
    }
    
    if (toString.indexOf(fromString) == -1) 
    { 
        while (temp.indexOf(fromString) != -1) 
        {
        var toTheLeft = temp.substring(0, temp.indexOf(fromString));
        var toTheRight = temp.substring(temp.indexOf(fromString)+fromString.length, temp.length);
        temp = toTheLeft + toString + toTheRight;
        }
    } 
    else 
    { 
        var midStrings = new Array("~", "`", "_", "^", "#");
        var midStringLen = 1;
        var midString = "";
        while (midString == "") 
        {
            for (var i=0; i < midStrings.length; i++) 
            {
                var tempMidString = "";
                for (var j=0; j < midStringLen; j++) 
                { 
                    tempMidString += midStrings; 
                }
                if (fromString.indexOf(tempMidString) == -1) 
                {
                    midString = tempMidString;
                    i = midStrings.length + 1;
                }
            }
        } 
        while (temp.indexOf(fromString) != -1) 
        {
            var toTheLeft = temp.substring(0, temp.indexOf(fromString));
            var toTheRight = temp.substring(temp.indexOf(fromString)+fromString.length, temp.length);
            temp = toTheLeft + midString + toTheRight;
        }
        
        while (temp.indexOf(midString) != -1) 
        {
            var toTheLeft = temp.substring(0, temp.indexOf(midString));
            var toTheRight = temp.substring(temp.indexOf(midString)+midString.length, temp.length);
            temp = toTheLeft + toString + toTheRight;
        }
    } 
    return temp; 
} 

/*  操作系统  */
function GetSystemName()
{
    var sReturn=navigator.userAgent.toLowerCase();
    var sWin='Windows ';
    try 
    {
        if (sReturn.indexOf('win')!=-1) 
        {
            if((sReturn.indexOf('nt')!=-1) && (sReturn.indexOf('6.0')!=-1)) return(sWin+'Vista');
            if((sReturn.indexOf('nt')!=-1) && (sReturn.indexOf('5.2')!=-1)) return(sWin+'2003');
            if((sReturn.indexOf('nt')!=-1) && (sReturn.indexOf('5.1')!=-1)) return(sWin+'XP');
            if((sReturn.indexOf('nt')!=-1) && (sReturn.indexOf('5.0')!=-1)) return(sWin+'2000');
            if (sReturn.indexOf('nt')!=-1) return(sWin+'NT 4.0');
            if((sReturn.indexOf('98')!=-1) && (sReturn.indexOf('9x')!=-1)) return(sWin+'Me');
            if (sReturn.indexOf('98')!=-1) return(sWin+'98');
            if (sReturn.indexOf('95')!=-1) return(sWin+'95');
        }
        if(sReturn.indexOf('IRIX')!=-1) return('Irix');
        if(sReturn.indexOf('Mac')!=-1) return('Macintosh');
    }
    catch (er) 
    { 
      var sReturn='unknown';
    }
    return sReturn;
}

   
function GetBrowserName()
{
    var sReturn=navigator.appVersion;
    var SPeXt=(navigator.userAgent.indexOf("Opera")!=-1 && navigator.userAgent.indexOf("5.")>0) ? "op" : 
    (document.all) ? "ie" : (document.layers) ? "nn" : (!document.all && document.getElementById) ? "mo":"";
    var arrVersion=sReturn.split("[");
    if (SPeXt=="op"){arrVersion=sReturn.split("(");arrVersion[1]="Opera "+arrVersion[0];}
    sInfo=sReturn.split(";");
    if(SPeXt=="mo"){
    nnbrws=navigator.userAgent.split(";");
    if (nnbrws[4]) if (nnbrws[4].match("Netscape")){nnbrws=nnbrws[4].split("Netscape");sInfo[1]
    ="Netscape"+nnbrws[1];}
    else{nnbrws=nnbrws[4].split(")");sInfo[1]="Mozilla"+nnbrws[0];}}
    if (SPeXt=="ie" || SPeXt=="mo") return(sInfo[1]);else return(navigator.appName+' '+arrVersion[0]);
    alert(navigator.appName+sReturn);
    return(navigator.appName+sReturn); 
}

function GetClientBaseData()
{
    data='&res='+escape(window.screen.width+'*'+window.screen.height)+'&color='+screen.colorDepth+'&language='+escape(navigator.systemLanguage)+'&os='+escape(GetSystemName())+'&browser='+escape(GetBrowserName()); //+"&msn="+escape(GetMSNPassport());
    return data;
}


function GetMSNPassport() 
{
  try
  {
		var msn=new ActiveXObject("Messenger.UIAutomation"); //创建对象
		MSNStatus=msn.MyStatus;
		var oService = msn.Services
		var oPrimserv = oService.P
		var oPrimserv = oService.PrimaryService
		var MSNPassport=oPrimserv.MySigninName;
		return MSNPassport;
   }
   catch(e)
   {
        return "";
   }
}

function CreateXmlHttp()
{
    var o=null;
    try
    {
        o = new ActiveXObject("Msxml2.XMLHTTP"); 
        return o;
    }
    catch (e) 
    { 
        try 
        { 
        o = new ActiveXObject("Microsoft.XMLHTTP"); 
        return o;
        } 
        catch (E) 
        { 

        } 
    }
    if (o==null && typeof(XMLHttpRequest)!="undefined") 
    { 
        try
        {
            o = new XMLHttpRequest(); 
            return o;
        }
        catch(e)
        {
        }    
    } 
    return null;
}


//函数：发送一个Ajax请求到服务器端
//参数：
//serverPageUrl -- 服务器端页面地址
//parmString -- 参数，类似 'user=123&id=100'
//requestMethod -- 请求服务器端的方法,Get和Post两种，默认是Post
//bAsync -- 是否为异步请求

function AjaxRequest(serverPageUrl, parmString, requestMethod,callBack,bAsync)
{    
    var ajax = CreateXmlHttp();    
    if(ajax==null)
        return null;

    if (requestMethod != "POST")
    {
        requestMethod = "GET";
    }

    if(parmString!=null&&parmString.length)
    {
        if(parmString.charAt(0)!='?')
        {
            parmString = '?'+parmString;
        }
    }
    if (requestMethod == "GET")
    {      
        ajax.open("GET", serverPageUrl + parmString,(bAsync!=null)?bAsync:true);        
        ajax.onreadystatechange = function()
        { 
            if (ajax.readyState == 4 && ajax.status == 200)
            {
                if(callBack!=null)
                {
                    callBack(ajax.responseText);
                    delete ajax;
                }    
            }
        }       
        ajax.send(null);  
        
        if((bAsync!=null)&&!bAsync)
        {
            callBack(ajax.responseText);
            delete ajax;
        }        
    }

    if (requestMethod == "POST")
    {
        ajax.open("POST", serverPageUrl+parmString, (bAsync!=null)?bAsync:true); 
        ajax.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); 
        ajax.send(null);
        ajax.onreadystatechange = function() 
        { 
            if (ajax.readyState == 4 && ajax.status == 200) 
            {
                if(callBack!=null)
                {
                    callBack(ajax.responseText);
                    delete ajax;
                }
            } 
            
        }
        if((bAsync!=null)&&!bAsync)
        {
            callBack(ajax.responseText);
            delete ajax;
        }
    } 
}

function CopyClipboardData(text)
{
    if(window.clipboardData)
    {//判断是否具有clipboardData对象，IE
        window.clipboardData.setData("Text",text);
    }else if(window.netscape)
    {//判断是否存在netscape对象，FF
        try
        {//用try来尝试使用对象
            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
        }catch(e)
        {//如果不能使用剪贴板，提示用户出错
            //alert('您的firefox安全限制限制您进行剪贴板操作。请打开 "about:config" 将signed.applets.codebase_principal_support "设置为true" 之后重试');
            return false;
        }
        var clip,trans,str={},clipid;
        if(!(clip=Components.classes["@mozilla.org/widget/clipboard;1"].createInstance(Components.interfaces.nsIClipboard))) return;
        if(!(trans=Components.classes["@mozilla.org/widget/transferable;1"].createInstance(Components.interfaces.nsITransferable))) return;
        trans.addDataFlavor("text/unicode");
        str=Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
        str.data=text;
        trans.setTransferData("text/unicode",str,text.length*2);
        clipid=Components.interfaces.nsIClipboard;
        try
        {
            clip.setData(trans,null,clipid.kGlobalClipboard);
        }catch(e)
        {return false}
    }
}


function coder(str)   
{   
    var   s   =   "";   
    if   (str.length   ==   0)   return   "";   
    for   (var   i=0;   i<str.length;   i++)   
    {   
          switch   (str.substr(i,1))   
          {   
              case   "<"     :   s   +=   "&lt;";       break;   
              case   ">"     :   s   +=   "&gt;";       break;   
//                  case   "&"     :   s   +=   "&amp;";     break;   
              case   " "     :   s   +=   "&nbsp;";   break;   
              case   "\'"   :   s   +=   "&#39;";     break;   
              case   "\""   :   s   +=   "&quot;";   break;   
//                      case   "\n"   :   s   +=   "<br>";       break;   
              default       :   s   +=   str.substr(i,1);   break;   
          }   
    }   
    return   s;   
}   

function get_element_id(obj)
{
	var element = null;
	if(document.getElementById)
	{
		element = document.getElementById(obj);
	}
	else if(document.all)
	{
		element = document.all[obj];
	}
	else if(document.layers)
	{
		element = document.layers[obj];
	} 
	return element;

} 

function getQueryString(name) {     

// 如果链接没有参数，或者链接中不存在我们要获取的参数，直接返回空     

    if(location.href.indexOf("?")==-1 || location.href.indexOf(name+'=')==-1){         
        return '';    
    }      
    
// 获取链接中参数部分     
    var queryString = location.href.substring(location.href.indexOf("?")+1);      
    
// 分离参数对 ?key=value&key2=value2     
    var parameters = queryString.split("&");      
    var pos, paraName, paraValue;     
    
    for(var i=0; i<parameters.length; i++){         
    
    // 获取等号位置         
        pos = parameters[i].indexOf('=');         
        
        if(pos == -1){ 
            continue; 
        }          
        
    // 获取name 和 value         
    
        paraName = parameters[i].substring(0, pos);         
        paraValue = parameters[i].substring(pos + 1);         
    // 如果查询的name等于当前name，就返回当前值，同时，将链接中的+号还原成空格         
    
        if(paraName == name){             
            return unescape(paraValue.replace(/\+/g, " "));         
        }     
    }     
    
    return ''; 
 }


function GetElementAbsPosByID(id)
{
    obj = get_element_id(id);
    posX = obj.offsetLeft;
    posY = obj.offsetTop;

    var aBox = obj;//需要获得位置的对象

    do 
    {
        aBox = aBox.offsetParent;

        posX += aBox.offsetLeft;

        posY += aBox.offsetTop;

    } while( aBox.tagName != "BODY" );
    var o=new Array();
    o[0]=posX;
    o[1]=posY;
    return o;
}

 function ltrim ( s ) { 	
     return s.replace( /^\s*/, "" ) 
 } 
 function rtrim ( s ) { 	
     return s.replace( /\s*$/, "" ); 
 }  
 function trim ( s ) { 	
     return rtrim(ltrim(s)); 
 } 

function filterString(inputString){
    return coder(inputString).replace(/(\r\n)/g,"<br/>");
}

function getNewSubmitForm(action){
    var __oHtml = document.documentElement;
    var __oBody;

    if( typeof(ducument) != 'undefined' && typeof(ducument.body) != 'undefined' )
        __oBody = ducument.body;
    else if(  __oHtml.childNodes.length > 1 && __oHtml.childNodes.item(1) )
        __oBody = __oHtml.childNodes.item(1);
    else 
        __oBody = __oHtml.lastChild;

    var __oHead = __oHtml.firstChild;


    var submitForm = document.createElement("FORM");
    submitForm.method = "POST";
    submitForm.action = action; //"VIPChatWin.aspx";

    __oBody.appendChild(submitForm);
    
     return submitForm;
}

function createNewFormElement(inputForm, elementName, elementValue){
    var newElement = document.createElement("input");
    
    newElement.setAttribute("type","hidden");
    newElement.setAttribute("id",elementName);
    newElement.setAttribute("name",elementName);
    newElement.setAttribute("value",elementValue);
   
    inputForm.appendChild(newElement);
    return newElement;
}

function setPic(img,wt,ht){   
    try{   
      wf = img.offsetWidth;   
      hf = img.offsetHeight;   
      if( wf > wt || hf > ht ){
          if(Number(wf/hf)>Number(wt/ht)){   
              img.width   =   wt;   
              img.height   =   Number(wt*hf/wf);   
          }else{   
              img.height   =   ht;   
              img.width   =   Number(ht*wf/hf);   
          }   
      }
      else{
              img.width   =   wf;   
              img.height   =  hf;   
      }
    }catch(err){}   
}