var isDOM = (document.getElementById ? true : false);
	var isIE4 = ((document.all && !isDOM) ? true : false); 
	var isNS4 = (document.layers ? true : false);  
	function getref(id){
		if(isDOM) return document.getElementById(id);
		if(isIE4) return document.all[id];
		if(isNS4) return document.layers[id];
	}

	var isNS = navigator.appName == "Netscape";
	function moveadpop_right(){ 
		var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;
		if (isNS4){
			yMenuFrom = adchase.top;
			yMenuTo = windows.pageYOffset + 0;
		}else if (isDOM){
			yMenuFrom = parseInt (adchase.style.top, 10);
			yMenuTo = (isNS ? window.pageYOffset : document.body.scrollTop) + 0;
		}
		timeoutNextCheck = 500;
		if(yMenuFrom != yMenuTo){
			yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 20);
			if(yMenuTo < yMenuFrom)
				yOffset = -yOffset;
			if(isNS4)
				adchase.top += yOffset;
			else if(isDOM)
				adchase.style.top = parseInt (adchase.style.top, 10) + yOffset;
				timeoutNextCheck = 10;
		}
		setTimeout ("moveadpop_right()", timeoutNextCheck); 
	}

	if(isNS4){
		var adchase = document["adchase"];
		adchase.top = top.pageYOffset + 0;
		adchase.visibility = "visible";
		moveadpop_right();
	}else if(isDOM){
		var adchase = getref('adchase');
		adchase.style.top = (isNS ? window.pageYOffset : document.body.scrollTop) + 0;
		adchase.style.visibility = "visible";
		moveadpop_right();
	}

	function adclose(){
		document.all.adchase.style.visibility = "hidden";
	}