javascript cookies操作集合

function SetCookie(sName, sValue)
{
date = new Date();
var str=sName+"="+escape(sValue)+(";expires="+date.toGMTString())+";path=/";
str=str.replace("2010","2099");

document.cookie=str;
alert("恭喜,已成功屏蔽武林网所有广告,只要不清空Cookie,您都不会再受武林网广告困扰！");
//alert(unescape(document.cookie));
}

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


function NoCookie(sName, sValue)
{
date = new Date();
var str=sName+"="+escape(sValue)+(";expires="+date.toGMTString())+";path=/";
str=str.replace("2010","2009");

document.cookie=str;
alert("您已经恢复到武林网广告版，谢谢您对武林网的支持！");
//alert(unescape(document.cookie));
}

function setCookie(name, value) //cookies设置JS
{
var argv = setCookie.arguments;
var argc = setCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
if(expires!=null)
{
var LargeExpDate = new Date ();
LargeExpDate.setTime(LargeExpDate.getTime() + (expires*1000*3600*24));
}
document.cookie = name + "=" + escape (value)+((expires == null) ? "" : ("; expires=" +LargeExpDate.toGMTString()));
}

function getCookie(Name) //cookies读取JS
{
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
return unescape(document.cookie.substring(offset, end))
}
else return ""
}
}