Properly handle non-visible markers

accessible_gmaps.js

@@ -297,6 +297,14 @@ function accessible_gmaps_infowindows_trapTabKey(object,evt, markerIndex) {
  */
 function accessible_gmaps_resetMarker(markerIndex){
 	marker = markers[markerIndex];
+	var markerID = "mkr-" + markerIndex;
+	
+	// If marker isn't visible, hide the div and move on.
+	if(!marker.getVisible()){
+		jQuery('div#' + markerID).css('display', 'none');
+		return;
+	}
+	
 	var offset = accessible_gmaps_getMarkerPos(marker);
 
 	// These values should be adjusted based on your marker size.
@@ -306,7 +314,6 @@ function accessible_gmaps_resetMarker(markerIndex){
 	var mapWidth = jQuery(mapIdentifier).width();
 	var mapHeight = jQuery(mapIdentifier).height();
 	
-	var markerID = "mkr-" + markerIndex;
 	var markerWidth = jQuery('div#' + markerID).width();
 	var markerHeight = jQuery('div#' + markerID).height();