var Xpos = 0;
var Ypos = 100;
var Ygravity = 0.9;
var scrollPos = 0;
var oldScrollPos = 0;


function FloatMenu() { 
docWidth = 907; // update document width
docHeight = document.body.clientHeight; // update document height
oldScrollPos = scrollPos;
scrollPos = document.body.scrollTop; // update scrollbar position
if(scrollPos > 200) scrollPos = 350;

Xpos = docWidth; //¿À¸¥ÂÊ ¿©¹é
Yboundary = scrollPos + 200;

if (floater.offsetTop < Yboundary - 10) // Object is behind boundary
Ypos += 3;

if (floater.offsetTop > Yboundary + 10) // Object is past boundary
Ypos -= 3;

Ypos *= Ygravity; // Slow object down

floater.style.pixelLeft = Xpos;
floater.style.pixelTop += Ypos; // Make object bounce
}

window.setInterval("FloatMenu()", 30); //¸Å°³º¯¼öÁß µÞÂÊ ¼ýÀÚ´Â ³»·Á¿À´Â ¼Óµµ