function m4 (el) {
	new Effect.Move(el.id, {
		x: -1,duration:0.2,
		//transition: Effect.Transitions.spring,
		mode: 'absolute'
	});
}
function m3 (el) {
	new Effect.Move(el.id, {
		x: 1,duration:0.2,
		//transition: Effect.Transitions.spring,
		mode: 'absolute',
		afterFinish: function() {m4(el);}
	});
}
function m2 (el) {
	new Effect.Move(el.id, {
		x:-5,duration:0.2,
		//transition: Effect.Transitions.spring,
		mode: 'absolute',
		afterFinish: function() {m3(el);}
	});
}

function m1(el) {
	new Effect.Move(el.id, {
		x:4,duration:0.1,
		//transition: Effect.Transitions.spring,
		mode: 'absolute',
		afterFinish: function() {m2(el);}
	});
}
$$('.item_list').each(
				function(el) {
					el.stopObserving('mouseover');
					el.observe('mouseover', function(e) {e.stop(); m1(el);});
				}
			);
//$('acerca').observe('mouseover', function(ev){m1(this);});

function sobre(el) {
	console.info(el);
	for(var x=0; x<document.images.length; x++) {
		
		document.images[x].src = document.images[x].src.replace('.png','1.png');
	}
}

/*$('acerca').observe('mouseover', function(e) {e.stop(); sobre('acerca'); });
$('desarrollo').observe('mouseover', sobre);
$('dgrafico').observe('mouseover', sobre);
$('animaciones').observe('mouseover', sobre);
$('contacto').observe('mouseover', sobre);*/