if (document.images) {

        var home_off = new Image();
        home_off.src = "images/nav/home_off.gif";
        var home_on = new Image();
        home_on.src = "images/nav/home_on.gif";

        var legal_off = new Image();
        legal_off.src = "images/nav/legal_off.gif";
        var legal_on = new Image();
        legal_on.src = "images/nav/legal_on.gif";

        var contact_off = new Image();
        contact_off.src = "images/nav/contact_off.gif";
        var contact_on = new Image();
        contact_on.src = "images/nav/contact_on.gif";

}

function act(imgName) {
        if (document.images) 
                document[imgName].src = eval(imgName + "_on.src");
}

function inact(imgName) {
        if (document.images)
        document[imgName].src = eval(imgName + "_off.src");
}

function restore() {
  self.location.reload();
}