function Floatingmenu() { 

var startY  = 10 
var Obj     = document.getElementById('menu')
    
Obj.sP      = function(y) { this.style.top = y } 
Obj.y       = startY 
    
window.positionTop = function() { 
var pY = window.pageYOffset ? window.pageYOffset : document.body.scrollTop
Obj.y += (pY + startY - Obj.y) / 8
        
Obj.sP(Obj.y) 
setTimeout("positionTop()", 10)
} 
positionTop()
}