function getEid(n) { return document.getElementById(n); }
var scrollid, endPoint, quickspd = 10, addPoint = 180;

function scrollmenu() { //scroll function
	if(getEid('quickmn')) {
		var topscroll = parseInt(getEid('quickmn').style.top, 10);
		var topmove = (endPoint - topscroll)/quickspd;
		if (topmove < 1 && topmove > 0) topmove = 1;
		getEid('quickmn').style.top = topscroll + topmove + 'px';
		if (endPoint - topscroll == 0 && endPoint - document.body.scrollTop == 150) {
			clearInterval(scrollid);
		}else{
			InitializeStaticMenu();
		}
	}
}

function InitializeStaticMenu() { //set end point
	if(scrollid) clearInterval(scrollid);
	if(!document.body.scrollTop) {
		endPoint = document.documentElement.scrollTop + addPoint;
	} else {
		endPoint = document.body.scrollTop + addPoint;
	}
	scrollid = setInterval(scrollmenu, 10);
}
window.onscroll = window.onresize = InitializeStaticMenu; //call : scrollmenu