Mootools Slimbox + other javascript (NOT WORKING)

Hey there
Just getting frustrated at my efforts to get 2 sets of javascripts working.

One is working off the mootools framework - using Slimbox.

The other I believe i ‘flat’ javascript. I think the problem arises in the onload and addevent statements.

How can I resolve this issue?

<body onload="initToggleCategories();">

<script type="text/javascript">
			window.addEvent('domready', function(){
				Lightbox.init({showControls: true});
			});
</script>
       

The full website is http://www.briansmyth.net/newsite/weddings.php

Ta