var slideTimer = 0;
var sliderHeight = 210;
var isSliding = false;
var slideSpeed = 4;

function startPushDown(){
	if (isSliding) {return;}
	isSliding = true;
	slideTimer = setInterval("slideBannerUp()", 32);
}

function slideBannerUp(){
	if (sliderHeight<=90){
		isSliding = false;
		sliderHeight = 0;
		adExpanded.style.height = "90px";
		clearInterval(slideTimer);
		adExpanded.style.display = "none";
		adCollapsed.style.display = "block";
	} else {
		sliderHeight -= slideSpeed;
		if (sliderHeight<0){sliderHeight=0};
		adExpanded.style.height = sliderHeight + "px";
	}
}