 <p>Anyways I am not sure of the OVImap API but I am guessing it will pass its own event object to you to the handler method. see if that gives you the right values.</p> <p>your listener function will be something like:</p> <pre><code>myClickableThing.addListener('click', function(event){this._clickFunction(event)}); </code></pre> <p>Hope this helps.</p> <p>On a side note wEll we ran into a similar issue on google maps and one particular browser where in the evt variable was not scoped correctly or something of that sort. </p> <p>I am not sure if that is your problem.</p>