<!-- Hide from browsers
function getImages() {
    if (isIMG) {
      menuTop1on = new Image();
      menuTop1off = new Image(); 
      menuTop1off.src = "/faculty/wharton/lab/images/nav2/menu1.jpg";
      menuTop1on.src = "/faculty/wharton/lab/images/nav2/menu1alt.jpg";
      menuTop2on = new Image();
      menuTop2off = new Image(); 
      menuTop2off.src = "/faculty/wharton/lab/images/nav2/menu2.jpg";
      menuTop2on.src = "/faculty/wharton/lab/images/nav2/menu2alt.jpg";

      menu1on = new Image();
      menu1off = new Image(); 
      menu1off.src = "/faculty/wharton/lab/images/nav/menu1.jpg";
      menu1on.src = "/faculty/wharton/lab/images/nav/menu1alt.jpg";
      menu2on = new Image();
      menu2off = new Image(); 
      menu2off.src = "/faculty/wharton/lab/images/nav/menu2.jpg";
      menu2on.src = "/faculty/wharton/lab/images/nav/menu2alt.jpg";
      menu3on = new Image(); 
      menu3off = new Image(); 
      menu3off.src = "/faculty/wharton/lab/images/nav/menu3.jpg";
      menu3on.src = "/faculty/wharton/lab/images/nav/menu3alt.jpg";
      menu4on = new Image(); 
      menu4off = new Image(); 
      menu4off.src = "/faculty/wharton/lab/images/nav/menu4.jpg";
      menu4on.src = "/faculty/wharton/lab/images/nav/menu4alt.jpg";
      menu5on = new Image(); 
      menu5off = new Image(); 
      menu5off.src = "/faculty/wharton/lab/images/nav/menu5.jpg";
      menu5on.src = "/faculty/wharton/lab/images/nav/menu5alt.jpg";
      menu6on = new Image(); 
      menu6off = new Image(); 
      menu6off.src = "/faculty/wharton/lab/images/nav/menu6.jpg";
      menu6on.src = "/faculty/wharton/lab/images/nav/menu6alt.jpg";
      menu7on = new Image(); 
      menu7off = new Image(); 
      menu7off.src = "/faculty/wharton/lab/images/nav/menu7.jpg";
      menu7on.src = "/faculty/wharton/lab/images/nav/menu7alt.jpg";
      menu8on = new Image(); 
      menu8off = new Image(); 
      menu8off.src = "/faculty/wharton/lab/images/nav/menu8.jpg";
      menu8on.src = "/faculty/wharton/lab/images/nav/menu8alt.jpg";
     }
}

var isIMG = document.images;
getImages();

function img_act(imgName) {
    if (isIMG) {
        imgOn = eval(imgName + "on.src");
        document [imgName].src = imgOn;
    }
}

function img_inact(imgName) {
    if (isIMG) {
        imgOff = eval(imgName + "off.src");
        document [imgName].src = imgOff;
    }
}
-->