window.addEvent('domready', function() {
	$$('#top_menu li').each(function(bt){
		var bta = bt.getElement('a.buttonlink');
		var btMorph = new Fx.Morph(bta, {duration: 'short', transition: Fx.Transitions.Sine.easeIn});
		bt.addEvents({
			'mouseenter' : function(event) {
				btMorph.cancel();
				btMorph.start({'background-position' : ['0 40','0 0']});
			},
			'mouseleave' : function(event) {
				btMorph.cancel();
				btMorph.start({'background-position' : '0 40'});
			}
		});
	});
	$$('#side_menu li').each(function(bt){
		var btMorph = new Fx.Morph(bt, {duration: 1000, transition: Fx.Transitions.Circ.easeInOut});
		
		var bta = bt.getElement('a');
		if(bta.hasClass('nolink')){
			bt.setStyle('background-position','-600 0');
		}else{
			bt.addEvents({
				'mouseenter' : function(event) {
					btMorph.cancel();
					btMorph.start({'background-position' : ['0 0','-600 0']});
				},
				'mouseleave' : function(event) {
					btMorph.cancel();
					btMorph.start({'background-position' :'0 0'});
				}
			});
		}
		
	});	
	$$('.nolink').each(function(obj){
		obj.addEvents({
			'click' : function(event) {	
				return false;
			}
		});
	});
});