var enterFunctionBisLogo = function(){
	this.start('width','181');
};
var leaveFunctionBis = function(){
	this.start('width','0');
};

window.addEvent('domready', function(){				
				var switchLogo = $('logo2');
				switchLogo = new Fx.Tween(switchLogo, {
					link: 'cancel',
					duration:'200',
					transition: Fx.Transitions.Sine.easeOut
				});
				$('logo').addEvents({
					'mouseenter': enterFunctionBisLogo.bind(switchLogo)
				});
				
				$('logo2').addEvents({
					'mouseleave': leaveFunctionBis.bind(switchLogo)
				});
});