home1 = new Image(); home1.src = "../images/gif/homeGiallo.gif";
home2 = new Image(); home2.src = "../images/gif/homeBlu.gif"
contact1 = new Image(); contact1.src = "../images/gif/contactGiallo.gif";
contact2 = new Image(); contact2.src = "../images/gif/contactBlu.gif"
about1 = new Image(); about1.src = "../images/gif/aboutGiallo.gif";
about2 = new Image(); about2.src = "../images/gif/aboutBlu.gif"
consigli1 = new Image(); consigli1.src = "../images/gif/consigliGiallo.gif";
consigli2 = new Image(); consigli2.src = "../images/gif/consigliBlu.gif"

function attiva(imgName)
{
   img1 = eval(imgName + "1.src");
   document [imgName].src = img1;
}

function disattiva(imgName)
{
   img2 = eval(imgName + "2.src");
   document [imgName].src = img2;
}