if (document.images) {

home_on = new Image();
home_on.src="home_gl.gif";
home_on.alt="Home";
pics_on = new Image();
pics_on.src="pictures_gl.gif";
pics_on.alt="Pictures";
creds_on = new Image();
creds_on.src="credits_gl.gif";
creds_on.alt="Credits";
interart_on = new Image();
interart_on.src="inter-art_gl.gif";
interart_on.alt="Interviews and Articles";
quot_on = new Image();
quot_on.src="quotes_gl.gif";
quot_on.alt="Quotes";
techinfo_on = new Image();
techinfo_on.src="techinfo_gl.gif";
techinfo_on.alt="Technical Information";

home_off = new Image();
home_off.src="home.gif";
home_off.alt="Home";
pics_off = new Image();
pics_off.src="pictures.gif";
pics_off.alt="Pictures";
creds_off = new Image();
creds_off.src="credits.gif";
creds_off.alt="Credits";
interart_off = new Image();
interart_off.src="inter-art.gif";
interart_off.alt="Interviews and Articles";
quot_off = new Image();
quot_off.src="quotes.gif";
quot_off.alt="Quotes";
techinfo_off = new Image();
techinfo_off.src="techinfo.gif";
techinfo_off.alt="Technical Information";
}

function changeImages(imgname,img) {
  if (document.images) {
      document[imgname].src = eval(img + ".src");
      document[imgname].alt = eval(img + ".alt");
  }
}