//来源：无忧脚本(http://bbs.51js.com/viewthread.php?tid=75292)
function Cookie()
{
    this.set = function(name,value,days,domain,path,secure){
        var str = name + "=" + escape(value) + ";";
        if(days) str += "expires="+new Date(new Date().getTime() + days*86400000).toGMTString()+"; ";
        if(domain)str+="domain="+domain+"; ";
        if(path)str+="path="+path+"; ";
        if(secure)str+="secure;" ;
        document.cookie=str;
    }
    this.get = function(name){
        var value = "";
        var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
        if(arr != null) { value=unescape(arr[2]); }
        return value;
    }
    this.del = function(name){
        document.cookie=name + "=;expires="+new Date().toGMTString();
    }
    this.toString=function(){
        var cookies=document.cookie.split("; ");
        for(var i=0;i<cookies.length;i++)
        {
            var s=cookies[i].split("=");
            if(s[0]==name)return unescape(s[1]);
        }
    }
}

//来源：QQ空间(http://270250392.qzone.qq.com/)
function setFileCookie(name,value,timeout,dm){
    var expires=new Date();
    if(!timeout)timeout=10*12*30*24*3600*1000;
    if(!dm)dm="qq.com";
    expires.setTime(expires.getTime()+timeout);
    document.cookie=name+"="+value+";expires="+expires.toGMTString()+"; path=/; domain="+dm;
    
}

function setCookie(name,value,path,domain){
    if(!path)path="/";
    if(!domain)domain="qq.com";
    document.cookie=name+"="+value+"; path="+path+"; domain="+domain;
    
}

function getCookie(name){
    var r=new RegExp("(\\b)"+name+"=([^;]*)(;|$)");
    var m=document.cookie.match(r);
    return (!m?"":m[2]);
    
}

function deleteCookie(name,path,domain){
    if(!path)path="/";
    if(!domain)domain="qq.com";
    document.cookie=name+"="+"; path="+path+"; domain="+domain+"; expires=Thu,1 Jan 1970 00:00:01 UTC";
    
}