var co = new CookieClass();

function CookieClass(){ 

this.expires = 1 ; //有效时间,以分钟为单位 //作废
this.path = "/"; //设置访问路径 
this.domain = ""; //设置访问主机 
this.secure = false; //设置安全性 

this.setCookie = function(name,value,ctime){ 
var str = name+"="+escape(value); 
if (ctime>0){ //如果设置了过期时间 
var date=new Date(); 
var ms=ctime * 60 * 1000; //每分钟有60秒，每秒1000毫秒 
date.setTime(date.getTime()+ms); 
str+="; expires="+date.toGMTString(); 
} 
if(this.path!="")str+="; path="+this.path; //设置访问路径 
if(this.domain!="")str+="; domain="+this.domain; //设置访问主机 
if(this.secure!="")str+="; true"; //设置安全性 

document.cookie=str; 
} 

this.getCookie=function(name){ 
var cookieArray=document.cookie.split("; "); //得到分割的cookie名值对 
var cookie=new Object(); 
for(var i=0;i<cookieArray.length;i++){ 
var arr=cookieArray[i].split("="); //将名和值分开 
if(arr[0]==name)return unescape(arr[1]); //如果是指定的cookie，则返回它的值 
} 
return ""; 
} 

this.deleteCookie=function(name){ 
var date=new Date(); 
var ms= 1 * 1000; 
date.setTime(date.getTime() - ms); 
var str = name+"=no; expires=" + date.toGMTString(); //将过期时间设置为过去来删除一个cookie 
document.cookie=str; 
} 

this.showCookie=function(){ 
alert(unescape(document.cookie)); 
} 

} 


/*
GetCookie(name) 获取Cookies方法 ，name为名字
SetCookie(name,value,interval,number,[path],[domain],[secure]) 设置cookies方法
name 名称，value cookies值，interval（"y" 年,"q"季,"m"月,"d"日,"h"时,"M"分,"s"秒，默认：日），number：数量级
[path],[domain],[secure] 可缺省。
DelCookie(name) 删除设置过期cookies ， name：cookies名称 
mr.junval@qq.com 2008

function GetCookieVal(offset){
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}

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

function SetCookie(name, value,interval,number){
if (interval == "0") return false;
var expdate = new Date();
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = DateAdd(interval,number,expdate);
var path = (argc > 4) ? argv[4] : null;
var domain = (argc > 5) ? argv[5] : null;
var secure = (argc > 6) ? argv[6] : false;
document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expires.toGMTString()))
+((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
+((secure == true) ? "; secure" : "");
}

function DateAdd(interval,number,date){
switch(interval){
case "y":{
date.setFullYear(date.getFullYear()+number); 
return date; 
break; 
}
case "q":{
date.setMonth(date.getMonth()+number*3); 
return date; 
break; 
}
case "m":{
date.setMonth(date.getMonth()+number); 
return date; 
break; 
}
case "w":{
date.setDate(date.getDate()+number*7); 
return date; 
break; 
}
case "d":{
date.setDate(date.getDate()+number); 
return date; 
break; 
}
case "h":{
date.setHours(date.getHours()+number); 
return date; 
break; 
}
case "M":{
date.setMinutes(date.getMinutes()+number); 
return date; 
break; 
}
case "s":{
date.setSeconds(date.getSeconds()+number); 
return date; 
break; 
}
case "0":{ 
return date; 
break; 
}
} 
} 
*/