if (document.images) {
var img01off = new Image(); img01off.src = "img/MU195005tl.jpg"
var img02off = new Image(); img02off.src = "img/MU195609tl.jpg"
var img03off = new Image(); img03off.src = "img/MU195406tl.jpg"
var img01on = new Image(); img01on.src = "img/MU195005tlo.jpg"
var img02on = new Image(); img02on.src = "img/MU195609tlo.jpg"
var img03on = new Image(); img03on.src = "img/MU195406tlo.jpg"
}
function act(imgName) {
if (document.images) 
document[imgName].src = eval(imgName + 'on.src')
}
function inact(imgName) {
if (document.images)
document[imgName].src = eval(imgName + 'off.src')
}