var navigation = {

	init : function (e) {
	
		var div_topnav = document.getElementById('topnav');
		
		var images = div_topnav.getElementsByTagName('IMG');
		
		for(i=0;i<images.length;i++){
			
			events.addEvent(images[i], 'mouseover', rollovers.mouseover, false);
			events.addEvent(images[i], 'mouseout', rollovers.mouseout, false);
		}
		
	}
		
	  
}