google maps v3 adding an info window to a circle

Is there a way to add a infoWindow to a circle created by google.maps.Circle

something like this

var circ = new google.maps.Circle({
            center:latlng,
            clickable:false,
            fillColor:colors[count],
            fillOpacity:0.3, 
            map:map,
            radius:radius,
            strokeColor:colors[count],
            strokeOpacity:0.3});

and

//create info window
var infoWindow= new google.maps.InfoWindow({
    content: "Your info here"
    });

//add a click event to the circle
google.maps.event.addListener(circ, 'click', function(){
//call  the infoWindow
infoWindow.open(map, circ);
}); 

or alternatively is there a way to create an invisible marker at the center of the circle that can be clicked on to access an infoWindow