Javascript + rails

Hi,

I have the following code for a google map event:

@map.event_init(@map,:click,“function(overlay,point)
{
if (overlay)
{
map.removeOverlay(overlay);
document.getElementById(“latitude”).value=null;
document.getElementById(“longitude”).value=null;
}
else
{
map.addOverlay(new GMarker(point));
document.getElementById(“latitude”).value=point.y;
document.getElementById(“longitude”).value=point.x;
}
}”)

As you can see, the action is written in JS.
How can I call a ruby action from that code, so I can handle events
properly?

Thanks,
hugo