<!-- Hide from browsers
function getImages() {
    if (isIMG) {
      menu1on = new Image();
      menu1off = new Image(); 
      menu1off.src = "/microbial/images/nav2/menu1.jpg";
      menu1on.src = "/microbial/images/nav2/menu1alt.jpg";
      menu2on = new Image();
      menu2off = new Image(); 
      menu2off.src = "/microbial/images/nav2/menu2.jpg";
      menu2on.src = "/microbial/images/nav2/menu2alt.jpg";
      menu3on = new Image();
      menu3off = new Image(); 
      menu3off.src = "/microbial/images/nav2/menu3.jpg";
      menu3on.src = "/microbial/images/nav2/menu3alt.jpg";
      menu4on = new Image();
      menu4off = new Image(); 
      menu4off.src = "/microbial/images/nav2/menu4.jpg";
      menu4on.src = "/microbial/images/nav2/menu4alt.jpg";
      menu5on = new Image();
      menu5off = new Image(); 
      menu5off.src = "/microbial/images/nav2/menu5.jpg";
      menu5on.src = "/microbial/images/nav2/menu5alt.jpg";
      menu6on = new Image();
      menu6off = new Image(); 
      menu6off.src = "/microbial/images/nav2/menu6.jpg";
      menu6on.src = "/microbial/images/nav2/menu6alt.jpg";
      menu7on = new Image();
      menu7off = new Image(); 
      menu7off.src = "/microbial/images/nav2/menu7.jpg";
      menu7on.src = "/microbial/images/nav2/menu7alt.jpg";
      menu8on = new Image();
      menu8off = new Image(); 
      menu8off.src = "/microbial/images/nav2/menu8.jpg";
      menu8on.src = "/microbial/images/nav2/menu8alt.jpg";
      menu9on = new Image();
      menu9off = new Image(); 
      menu9off.src = "/microbial/images/nav2/menu9.jpg";
      menu9on.src = "/microbial/images/nav2/menu9alt.jpg";
      menu10on = new Image();
      menu10off = new Image(); 
      menu10off.src = "/microbial/images/nav2/menu10.jpg";
      menu10on.src = "/microbial/images/nav2/menu10alt.jpg";
      menu11on = new Image();
      menu11off = new Image(); 
      menu11off.src = "/microbial/images/nav2/menu11.jpg";
      menu11on.src = "/microbial/images/nav2/menu11alt.jpg";
      programon = new Image(); 
      programoff = new Image(); 
      programoff.src = "/microbial/training/images/program.jpg";
      programon.src = "/microbial/training/images/programalt.jpg";
      mmptpon = new Image(); 
      mmptpoff = new Image(); 
      mmptpoff.src = "/microbial/training/images/mmptp.jpg";
      mmptpon.src = "/microbial/training/images/mmptpalt.jpg";
      woodson = new Image(); 
      woodsoff = new Image(); 
      woodsoff.src = "/microbial/training/images/woods.jpg";
      woodson.src = "/microbial/training/images/woodsalt.jpg";
      genomeon = new Image(); 
      genomeoff = new Image(); 
      genomeoff.src = "/microbial/training/images/genome.jpg";
      genomeon.src = "/microbial/training/images/genomealt.jpg";
	  dsidon = new Image(); 
      dsidoff = new Image(); 
      dsidoff.src = "/microbial/training/images/dsid.jpg";
      dsidon.src = "/microbial/training/images/dsidalt.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;
    }
}
-->