br=(((navigator.appName == "Netscape") &&
(parseInt(navigator.appVersion) >= 3 )) ||
((navigator.appName == "Microsoft Internet Explorer") &&
(parseInt(navigator.appVersion) >= 4 )));

function preload(img) {
var a=new Image(); a.src=img; return a;
}

if(br) {
b1on=preload('img/tm-home.gif');b1off=preload('img/tm-home-on.gif');
b2on=preload('img/tm-products.gif');b2off=preload('img/tm-products-on.gif');
b3on=preload('img/tm-services.gif');b3off=preload('img/tm-services-on.gif');
b4on=preload('img/tm-support.gif');b4off=preload('img/tm-support-on.gif');
b5on=preload('img/tm-contact_us.gif');b5off=preload('img/tm-contact_us-on.gif');

btn1on=preload('img/btn-buy_now-large.gif');btn1off=preload('img/btn-buy_now-large-on.gif');
btn2on=preload('img/btn-try_now-large.gif');btn2off=preload('img/btn-try_now-large-on.gif');
}