function createYahooMarker(lat, lon, num, title, image, width, height) {
	var geopoint = new YGeoPoint(lat,lon);
	if (image) {
		var myImage = new YImage(image,new YSize(width,height));
	}
	else {
		var myImage = new YImage();
	}
	var marker = new YMarker(geopoint,myImage);
	if (num)
		marker.addLabel(num);
	marker.addAutoExpand(title);
	map.addOverlay(marker);
	return marker;
}