Javascript操作cookie的函数代码

function setCookie(name, value, iDay) { 
var oDate = new Date(); 
oDate.setDate(oDate.getDate() + iDay); 
document.cookie = name+'='+value+';expires='+oDate; 
} 
function getCookie(name) { 
var arr = document.cookie.split('; '); 
var i = 0; 
for(i=0; i<arr.length; i++) { 
var arr2 = arr[i].split('='); 
if(arr2[0] == name) {return arr2[1];} 
} 
return ''; 
} 
function removeCookie(name) { 
setCookie(name,'',-1); 
}

var cookie=new function(){ 
this.set=function(name,value,hours){ 
var life=new Date().getTime(); 
life+=hours*1000*60; 
var cookieStr=name+"="+escape(value)+";expires="+new Date(life).toGMTString(); 
document.cookie=cookieStr; 
}; 
this.get=function(name){ 
var cookies = document.cookie.split(";"); 
if(cookies.length>0){ 
var cookie=cookies[0].split("="); 
if(cookie[0]==name) {return unescape(cookie[1]);} 
} 
return null; 
}; 
this.remove=function(name){ 
var cookieStr=name+"="+escape('null')+";expires="+new Date().toGMTString(); 
document.cookie=cookieStr; 
}; 
}