if (document.images) {
var img1on = new Image();
img1on.src = "images/mb1_home2.gif";
var img1off = new Image();
img1off.src = "images/mb1_home.gif";

var img2on = new Image();
img2on.src = "images/mb2_food2.gif";
var img2off = new Image();
img2off.src = "images/mb2_food.gif";

var img3on = new Image();
img3on.src = "images/mb3_wine2.gif";
var img3off = new Image();
img3off.src = "images/mb3_wine.gif";

var img4on = new Image();
img4on.src = "images/mb4_space2.gif";
var img4off = new Image();
img4off.src = "images/mb4_space.gif";

var img5on = new Image();
img5on.src = "images/mb5_event2.gif";
var img5off = new Image();
img5off.src = "images/mb5_event.gif";

var img6on = new Image();
img6on.src = "images/mb6_access2.gif";
var img6off = new Image();
img6off.src = "images/mb6_access.gif";

var img7on = new Image();
img7on.src = "images/hotnewsLavel3-2.jpg";
var img7off = new Image();
img7off.src = "images/hotnewsLavel3.jpg";

}

function On(name) {
  if (document.images) {
    document.images[name].src = eval(name + 'on.src');
  }
}

function Off(name) {
  if (document.images) {
    document.images[name].src = eval(name + 'off.src');
  }
}