jQuery.fn.fluttua=function(val){
	$(this).animate({top: '+='+val},1000,"easeInOutSine");
	$(this).animate({top: '-='+val},1000,"easeInOutSine",function(){$(this).fluttua(val);});	
}


 $(document).ready(function() {
							
$("#web").fluttua(6);
$("#logotipi").delay(590).fluttua(6);
$("#stampa").delay(800).fluttua(6);
$("#illustrazione").delay(1200).fluttua(6);

});