var ScrollAtX;
	var ScrollAtY;
	
	function getLayer(layerId){
		var theLayerToRetrieve;
		if(document.getElementById) {
			theLayerToRetrieve = document.getElementById(layerId);
		}
		if(document.all) {
			theLayerToRetrieve = document.all[layerId];
		}
		if (theLayerToRetrieve) {
			return theLayerToRetrieve.style;
		}
		return null;
	}
	
	function rollon(layerId) {
		var theLayer = getLayer('articletip' + layerId);
		if (theLayer) {
			if (document.all) {
				ScrollAtY = event.y+document.body.scrollTop;
				ScrollAtX = event.x+document.body.scrollLeft;
			}
			if (parseInt(navigator.appVersion)>3) {
				if (navigator.appName=="Netscape") {
					winW = window.innerWidth;
					winH = window.innerHeight;
				}
				if (navigator.appName.indexOf("Microsoft")!=-1) {
					winW = document.body.offsetWidth;
					winH = document.body.offsetHeight;
				}
			}
			theLayer.top = ScrollAtY + 25;
			if (ScrollAtX > 375) {
				theLayer.left = ScrollAtX - 200;
				if (ScrollAtX > winW - 300) {
					theLayer.left = winW - 450;
				}
			} else {
				theLayer.left = 250;
			}	
			theLayer.visibility = 'visible';
		}
	}
	
	function rolloff(layerId) {
		var theLayer = getLayer('articletip' + layerId);
		if(theLayer) {
			theLayer.visibility = 'hidden';
		}
	}