$(document).ready(function() {
	
    var splashs = $('div.splash');
    var current_slash = false;
    splashs.hide();
    setInterval(show_new_splash, 6000); // si tu veux changer la vitesse c'est ici ( en milisecondes ) 3 sec = 3000
    
    function show_new_splash()
    {
    	var rand = Math.floor(Math.random() * splashs.length);
    	if (current_slash)
    		current_slash.hide();
    	
    	current_slash = $(splashs[rand]).show();
    }
    show_new_splash();
});