var expire;

function deleteCookie() {
 //$.cookie('cookie',"",{path:"/",expires:-1});
 expire = new Date();
 expire.setYear(expire.getYear() - 1);
 document.cookie = 'cookie =' +  ";expires=" + expire.toGMTString();
 location.href= location.protocol + "//" + location.hostname + "/index.html";
 return ;
}

function retention_cookie(){
 if(document.cookie){
   var cookie_info = document.cookie.split(';');
   var test = cookie_info.length;
   for(i = 0; i < cookie_info.length; i++){
     var lead_cookie = cookie_info[i].split('=');
     var get_cookie = lead_cookie[1].replace(/^\s|\s*$/,'');
     if(get_cookie == 'sojoflash'){
       location.href= location.protocol + "//" + location.hostname + "/top.html";
       return ;
     }
   }
   SetCookie();

 }else {
   SetCookie();
 }
}

function SetCookie(){
 var set_cookie = "sojoflash"
 expire = new Date();
 expire.setTime(expire.getTime() + (24 * 60 * 60 * 1000 * 36500));
 document.cookie = 'cookie =' + set_cookie + '; expires=' + expire.toGMTString();
 return ;
}