function setCookie(c_name, value, expiredays, path, domain) 
      {
        var exdate=new Date();
        exdate.setDate(exdate.getDate()+expiredays);
        document.cookie=c_name+ "=" +escape(value)+
        ((expiredays==null) ? "" : ";expires="+exdate.toGMTString()) +
        ((path==null) ? "" : ";path="+ path) + 
        ((domain==null) ? "" : ";domain="+ domain);
      }
      
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 "";
      }