document.write('<STYLE TYPE="text/css">.imgTrans{ filter:revealTrans(duration=0.4,transition=12) }</STYLE>');
var onImages=new Array();
function Rollover(imgName, imgSrc)
{
onImages[imgName] = new Image();
onImages[imgName].src = imgSrc;
}

function turnOn(imgName){ 
if(document.images[imgName].filters != null)
document.images[imgName].filters[0].apply();
document.images[imgName].offSrc = document.images[imgName].src;
document.images[imgName].src = onImages[imgName].src;
if(document.images[imgName].filters != null)
document.images[imgName].filters[0].play();
}

function turnOff(imgName){ 
if(document.images[imgName].filters != null)
document.images[imgName].filters[0].stop();
document.images[imgName].src = document.images[imgName].offSrc;
}
Rollover("home", "pics/but1.gif");
Rollover("about", "pics/but2.gif");
Rollover("contact", "pics/but3.gif");