function create_cookie(name, value, days) {
    var expires = "";
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days * 24 * 60 * 60 * 1000));
        expires = "; expires="+date.toGMTString();
    }
    document.cookie = name + "=" + value + expires +"; path=/";
}

function get_cookie(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 set_check_cookie()
{
    create_cookie("c_check_cookie", "check_cookie", 1024);
}