function getCookie(name) {
        var nameOfCookie = name+"=";
        var x = 0;
        while( x <= document.cookie.length ) {
            var y = (x+nameOfCookie.length);
            if( document.cookie.substring(x,y) == nameOfCookie ) {
                if( (endOfCookie = document.cookie.indexOf(";",y)) == -1 ) 
                    endOfCookie = document.cookie.length;
                return unescape( document.cookie.substring(y, endOfCookie) );
            }
            x = document.cookie.indexOf("", x) +1;
            if( x == 0 ) 
                break;
        }
     return "";
   }

function setCookie(name, value, expiredays) {
       var todayDate = new Date();
       todayDate.setDate(todayDate.getDate()+expiredays);
       document.cookie= name+"="+escape(value)+"; path=/; expires=" + todayDate.toGMTString() + ";";
}

function delCookie(name) {
        var expiredays = new Date();
        var value = 'Delete Cookie';
        expiredays.setTime(expiredays.getTime()-1);
        var todayDate = new Date();
        todayDate.setDate(todayDate.getDate()+expiredays);
        document.cookie= name+"="+escape(value)+"; path=/; expires=" + todayDate.toGMTString() + ";";
//        alert(name+"Äí±â°¡ »èÁ¦µÇ¾ú½À´Ï´Ù.");
}