window.addEvent('domready', function(){


	$('nav').addEvents({
		'mouseenter': function(){

			this.set('tween', {
				duration: 600,
				transition:Fx.Transitions.linear
			}).tween('height', '174px');

			re=document.getElementById('momo');
			re.style.background='url(images/arr_white2.gif) no-repeat 108px';

		},

		'mouseleave': function(){
			this.set('tween', {}).tween('height', '18px');
			re=document.getElementById('momo');
			re.style.background='url(images/arr_white.gif) no-repeat 108px';
		}
	});


	$('nav2').addEvents({
		'mouseenter': function(){
			this.set('tween', {	duration: 600, transition:Fx.Transitions.linear }).tween('height', '110px');
			re=document.getElementById('momo2');
			re.style.background='url(images/arr_white2.gif) no-repeat 108px';
		},

		'mouseleave': function(){
			this.set('tween', {}).tween('height', '18px');
			re=document.getElementById('momo2');
			re.style.background='url(images/arr_white.gif) no-repeat 108px';
		}
	});
	
		$('nav3').addEvents({
		'mouseenter': function(){

			this.set('tween', {
				duration: 600,
				transition:Fx.Transitions.linear 
			}).tween('height', '174px');

			re=document.getElementById('momo3');
			re.style.background='url(images/arr_white2.gif) no-repeat 108px';
			
		},
		'mouseleave': function(){
			this.set('tween', {}).tween('height', '18px');

			re=document.getElementById('momo3');
			re.style.background='url(images/arr_white.gif) no-repeat 108px';
			
		}
	});

});