/*


    var isDOM = (document.getElementById ? true : false); 
    var isIE4 = ((document.all && !isDOM) ? true : false); 
    var isNS4 = (document.layers ? true : false); 
     
    function getRef(id) { 
            if (isDOM) return document.getElementById(id); 
            if (isIE4) return document.all[id]; 
            if (isNS4) return document.layers[id]; 
    } 
     
    var isNS = navigator.appName == "Netscape"; 
    function moveRightEdge() { 
            var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck; 
            if (isNS4) { 
                    yMenuFrom   = divMenu.top; 
                    yMenuTo     = windows.pageYOffset +10 ;   // 위쪽 위치 
            } else if (isDOM) { 
                    yMenuFrom   = parseInt (divMenu.style.top, 10); 
                    yMenuTo     = (isNS ? window.pageYOffset : document.body.scrollTop) +100; // 위쪽 위치 
            } 
            timeoutNextCheck = 500; 
            if (yMenuFrom != yMenuTo) { 
                    yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 20); 
                    if (yMenuTo < yMenuFrom) 
                            yOffset = -yOffset; 
                    if (isNS4) 
                            divMenu.top += yOffset; 
                    else if (isDOM) 
                            divMenu.style.top = parseInt (divMenu.style.top, 10) + yOffset; 
                            timeoutNextCheck = 10; 
            } 
            setTimeout ("moveRightEdge()", timeoutNextCheck); 
    } 
     
    if (isNS4) { 
            var divMenu = document["divMenu"]; 
            divMenu.top = top.pageYOffset +10; 
            divMenu.visibility = "visible"; 
            moveRightEdge(); 
    } else if (isDOM) { 
            var divMenu = getRef('divMenu'); 
            divMenu.style.top = (isNS ? window.pageYOffset : document.body.scrollTop) +10; 
            divMenu.style.visibility = "visible"; 
            moveRightEdge(); 
    } 
    
    */