var timerID;
var pointAtX;

function slideInhomepageAd() {
	pointAtX += 15;
	document.getElementById("homepageAd").style.top = pointAtX;
	if ( pointAtX >= 110 ) {
		clearTimeout(timerID);
	}
}

function startSlideInhomepageAd() {
	pointAtX = -90;
	document.getElementById("homepageAd").style.visibility = "visible";
	timerID = setInterval("slideInhomepageAd()", 80);
}

function slideOuthomepageAd() {
	pointAtX -= 30;
	document.getElementById("homepageAd").style.top = pointAtX;
	if ( pointAtX <= -90 ) {
		clearTimeout(timerID);
	}
}

function startSlideOuthomepageAd() {
	timerID = setInterval("slideOuthomepageAd()", 80);
}