window.addEvent('domready', function(){
	$(document.body).getElements('#logotypes img').addEvents({
	    'mouseenter': function(){
			this.set('src', new String(this.get('src')).replace(/^(.*)\.png$/, '$1-hi.png'));
	    },
	    'mouseleave': function(){
	        this.set('src', new String(this.get('src')).replace(/^(.*)-hi\.png$/, '$1.png'));
	    }
	});
});