function getCookie(c_name)
            {
                if (document.cookie.length>0)
                {
                    c_start=document.cookie.indexOf(c_name + "=")
                    if (c_start!=-1)
                    { 
                        c_start=c_start + c_name.length+1 
                        c_end=document.cookie.indexOf(";",c_start)
                        if (c_end==-1) c_end=document.cookie.length
                        return unescape(document.cookie.substring(c_start,c_end))
                   } 
                }
                return ""
            }
    
            function setCookie(c_name,value,expiredays)
            {
                var exdate=new Date()
                exdate.setDate(exdate.getDate()+expiredays)
                document.cookie=c_name+ "=" +escape(value)+
                ((expiredays==null) ? "" : ";expires="+exdate.toGMTString())
            }

            function encode(str, key) 
            {
                var crytxt = "";
                var k, keylen = key.length;
                for(var i=0; i<str.length; i++) 
                {
                    k = i % keylen;
                    crytxt += String.fromCharCode(str.charCodeAt(i) ^ key.charCodeAt(k));
                }
                return crytxt;
            }
    
            (function() {
                cookie = getCookie("API_FE_SEC_STR_01");
                //console.log(cookie);
                sec = getCookie("BAIDUID") + "dk2D1887~3*)2!";
                cookie = encode(cookie, sec);
                setCookie("API_FE_SEC_STR_02", cookie, 30);
                })();