Bring GoogleMaps InfoWindow to front - google-maps

Question

I have a GoogleMaps APIv3 application in which multiple InfoWindows can be open at any one time. I would like to be able to bring an obscured InfoWindow to the front of all other InfoWindows if any part of it is clicked - similar to the behaviour of windows in MS Windows OS.
I had thought to add an onclick event handler which increases the z-index of the InfoWindow, but the event handler does not appear to be firing.
ZIndex is a global variable that keeps increasing as InfoWindows are clicked - or thats the theory anyway.
Can anyone help ?
Here is my code:-
var ZIndex=1;
var iw = new google.maps.InfoWindow({ content:contentString });
google.maps.event.addListener(iw, 'click', handleInfoWindowClick(iw) );
function handleInfoWindowClick(infoWindow) {
return function() {
infoWindow.setZIndex(ZIndex++);
}
}

Answer 1

there is no click-event for an infoWindow, it's a little bit more difficult.
you'll need to use an element(not a string) as content for the infowindow, because you need a DOMListener instead a listener for the infowindow-object
when domready-fires, you must apply the click-DOMListener to the anchestor of this content-node that defines the infowindow
The following code will do this for you, add this to your page:
google.maps.InfoWindowZ=function(opts){
var GM = google.maps,
GE = GM.event,
iw = new GM.InfoWindow(),
ce;
if(!GM.InfoWindowZZ){
GM.InfoWindowZZ=Number(GM.Marker.MAX_ZINDEX);
}
GE.addListener(iw,'content_changed',function(){
if(typeof this.getContent()=='string'){
var n=document.createElement('div');
n.innerHTML=this.getContent();
this.setContent(n);
return;
}
GE.addListener(this,'domready',
function(){
var _this=this;
_this.setZIndex(++GM.InfoWindowZZ);
if(ce){
GM.event.removeListener(ce);
}
ce=GE.addDomListener(this.getContent().parentNode
.parentNode.parentNode,'click',
function(){
_this.setZIndex(++GM.InfoWindowZZ);
});
})
});
if(opts)iw.setOptions(opts);
return iw;
}
Instead of google.maps.InfoWindow() you must call now google.maps.InfoWindowZ()
It also returns a genuine InfoWindow, but with the mentioned listener applied to it. It also creates the node from the content when needed.
Demo: http://jsfiddle.net/doktormolle/tRwnE/
Updated version for visualRefresh(using mouseover instead of click) http://jsfiddle.net/doktormolle/uuLBb/