function newImage(arg) {if (document.images) {rslt = new Image();
rslt.src = arg;return rslt;}}
function changeImages() {if (document.images && (preloadFlag == true)) {
for (var i=0; i<changeImages.arguments.length; i+=2) {
document[changeImages.arguments[i]].src = changeImages.arguments[i+1];}}}
var preloadFlag = false;function preloadImages() {if (document.images) {

btn_radio = newImage("img/btn_radio_on.gif");
btn_bnradio = newImage("img/btn_bnradio_on.gif");
btn_mail = newImage("img/btn_mail_on.gif");
btn_link1 = newImage("img/btn_link1_on.gif");
btn_link2 = newImage("img/btn_link2_on.gif");

preloadFlag = true;}}preloadImages();