Event.observe(window, 'load', function(){
    $('entree').setOpacity(0.5);
    $('entree').observe('mouseover',function(){
        new Effect.Opacity('entree', {from: 0.5, to: 1});
    });

	$('titre').observe('mouseover', function(){
        new Effect.Pulsate('titre', {pulses: 5, duration: 1.5} );
    });
		
});