if (document.images) {
            b1on  = new Image();     b1on.src = "http://ehomebusiness.com/images/home02.gif";
            b1off = new Image();    b1off.src = "http://ehomebusiness.com/images/home01.gif";
  }
  function imgOn(imgName) {
            // if (document.images) {
            if (document[imgName]) {
                document.images[imgName].src = eval(imgName + "on.src");
            }
  }
  function imgOff(imgName) {
            // if (document.images) {
            if (document[imgName]) {
                document.images[imgName].src = eval(imgName + "off.src");
            }
  }