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var img1=new Image();img1.src="img/buttons/chi_siamo_over.png";
var img2=new Image();img2.src="img/buttons/corsi_over.png";
var img3=new Image();img3.src="img/buttons/dove_siamo_over.png";
var img4=new Image();img4.src="img/buttons/home_over.png";
var img5=new Image();img5.src="img/buttons/link_utili_over.png";
var img6=new Image();img6.src="img/buttons/pensione_cavalli_over.png";
var img7=new Image();img7.src="img/buttons/struttura_over.png";
var img8=new Image();img8.src="img/buttons/email_over.png";