if (document.images) {

    //"On" images
	balon = new Image();
    balon.src = "objects/images/bal_on.gif";

    boson = new Image();
    boson.src = "objects/images/bos_on.gif";

	calon = new Image();
    calon.src = "objects/images/cal_on.gif";
	
	chion = new Image();
    chion.src = "objects/images/chi_on.gif";
    
    cinon = new Image();
    cinon.src = "objects/images/cin_on.gif";
    
    cleon = new Image();
    cleon.src = "objects/images/cle_on.gif";

	cwson = new Image();
    cwson.src = "objects/images/cws_on.gif";

	deton = new Image();
    deton.src = "objects/images/det_on.gif";	
	
	houon = new Image();
    houon.src = "objects/images/hou_on.gif";
    
    kcaon = new Image();
    kcaon.src = "objects/images/kca_on.gif";
	
	laon = new Image();
    laon.src = "objects/images/la_on.gif";
    
    minon = new Image();
    minon.src = "objects/images/min_on.gif";
	
	mlnon = new Image();
    mlnon.src = "objects/images/mln_on.gif";
    
    nymon = new Image();
    nymon.src = "objects/images/nym_on.gif";

    nyyon = new Image();
    nyyon.src = "objects/images/nyy_on.gif";
	
	phion = new Image();
    phion.src = "objects/images/phi_on.gif";
    
	piton = new Image();
    piton.src = "objects/images/pit_on.gif";

	sfon = new Image();
    sfon.src = "objects/images/sf_on.gif";
	
	stlon = new Image();
    stlon.src = "objects/images/stl_on.gif";

	wshon = new Image();
    wshon.src = "objects/images/wsh_on.gif";

    //"Off" images
    baloff = new Image();
    baloff.src = "objects/images/bal_off.gif";

    bosoff = new Image();
    bosoff.src = "objects/images/bos_off.gif";

	caloff = new Image();
    caloff.src = "objects/images/cal_off.gif";
	
	chioff = new Image();
    chioff.src = "objects/images/chi_off.gif";
    
    cinoff = new Image();
    cinoff.src = "objects/images/cin_off.gif";
    
    cleoff = new Image();
    cleoff.src = "objects/images/cle_off.gif";

	cwsoff = new Image();
    cwsoff.src = "objects/images/cws_off.gif";

	detoff = new Image();
    detoff.src = "objects/images/det_off.gif";
	
	houoff = new Image();
    houoff.src = "objects/images/hou_off.gif";
    
    kcaoff = new Image();
    kcaoff.src = "objects/images/kca_off.gif";
	
	laoff = new Image();
    laoff.src = "objects/images/la_off.gif";

	minoff = new Image();
    minoff.src = "objects/images/min_off.gif";
    
    mlnoff = new Image();
    mlnoff.src = "objects/images/mln_off.gif";
    
    nymoff = new Image();
    nymoff.src = "objects/images/nym_off.gif";
    
    nyyoff = new Image();
    nyyoff.src = "objects/images/nyy_off.gif";
	
	phioff = new Image();
    phioff.src = "objects/images/phi_off.gif";

	pitoff = new Image();
    pitoff.src = "objects/images/pit_off.gif";

	sfoff = new Image();
    sfoff.src = "objects/images/sf_off.gif";

	stloff = new Image();
    stloff.src = "objects/images/stl_off.gif";

	wshoff = new Image();
    wshoff.src = "objects/images/wsh_off.gif";

}

function imgOn(imgName){
    if (document.images) {
      document.images[imgName].src = eval(imgName + "on.src");
    }
}

function imgOff(imgName) {
    if (document.images) {
      document.images[imgName].src = eval(imgName + "off.src");
    }
}

function changeURL(){
      var URL = document.change.url.options[document.change.url.selectedIndex].value;
      window.location.href = URL;
	}