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   = divRightBanner.top; 
        yMenuTo     = windows.pageYOffset + 0;
    } 
    else if (isDOM) { 
        yMenuFrom   = parseInt (divRightBanner.style.top, 10); 
        yMenuTo     = (isNS ? window.pageYOffset : document.body.scrollTop) + 0;
    } 
    timeoutNextCheck = 500;  

    if ( yMenuFrom != yMenuTo ) { 
         yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 15); // ÇöÀ§Ä¡ À̵¿¼Óµµ
         if ( yMenuTo < yMenuFrom ) yOffset = -yOffset; 
         if ( isNS4 ) divRightBanner.top += yOffset; 
         else if (isDOM) 
              divRightBanner.style.top = parseInt (divRightBanner.style.top, 10) + yOffset; 
              timeoutNextCheck = 15; // Á¦À§Ä¡ À̵¿¼Óµµ
    }
    setTimeout ("moveRightEdge()", timeoutNextCheck); 
}

function StartRightBanner() {
    if ( isNS4 ) { 
         var divRightBanner = document["divRightBanner"]; 
         divRightBanner.top = top.pageYOffset + 100; 
         divRightBanner.visibility = "visible"; 
         moveRightEdge(); 
    } 
    else if ( isDOM ) { 
         var divRightBanner = getRef('divRightBanner'); 
         divRightBanner.style.top = (isNS ? window.pageYOffset : document.body.scrollTop) + 100; 
         divRightBanner.style.visibility = "visible";
         moveRightEdge();
    }
}