home_off= new Image();
home_off.src = "../img/bt_home_off.gif";
home_on = new Image();
home_on.src = "../img/bt_home_on.gif";

squadra_off= new Image();
squadra_off.src = "../img/bt_squadra_off.gif";
squadra_on = new Image();
squadra_on.src = "../img/bt_squadra_on.gif";

societa_off= new Image();
societa_off.src = "../img/bt_societa_off.gif";
societa_on = new Image();
societa_on.src = "../img/bt_societa_on.gif";

storia_off= new Image();
storia_off.src = "../img/bt_storia_off.gif";
storia_on = new Image();
storia_on.src = "../img/bt_storia_on.gif";

calendario_off= new Image();
calendario_off.src = "../img/bt_calendario_off.gif";
calendario_on = new Image();
calendario_on.src = "../img/bt_calendario_on.gif";

mediateca_off= new Image();
mediateca_off.src = "../img/bt_mediateca_off.gif";
mediateca_on = new Image();
mediateca_on.src = "../img/bt_mediateca_on.gif";

download_off= new Image();
download_off.src = "../img/bt_download_off.gif";
download_on = new Image();
download_on.src = "../img/bt_download_on.gif";

function swapImg(id,name){
	document.images[id].src = eval(name+".src");
}