Js Works Only In Opera?

I have this code

[URL]

If you'll use Opera browser, it will display lightbox style animation after clicking on marker on the map. Other browsers are not so kind

Chrome give an error Uncaught TypeError: Object [URL] has no method 'click'

To display animation in bumpbox(lightbox alternative) I use this html code

Code:

<div id="neco" style="display: none">
<a href="clouds.swf" class="bump">clouds</a>
</div>

and this javascript

Code:

google.maps.event.addListener(markerName, 'click', function mojafunkcia() {
document.getElementById("neco").getElementsByTagName("a")[0].click();
})

I assume that html element cannot access that javascript function because it ist nested within other function (please see source code on turie.eu), but I'm not very skilled with javascript, so I'm not sure.