//Generate transition CSS (transition=0 to 23)
document.write('<style type="text/css">.imgTrans{ filter:revealTrans(duration=0.4,transition=12) }</style>');

//Uncomment the next line for fading rollovers instead of dissolving:
//document.write('<style type="text/css">.imgTrans{ filter:blendTrans(duration=0.4) }</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;
}

//Specify name of participating images, plus paths to their onMouseover replacements:
Rollover("prima",  "images/prima_1.jpg");
Rollover("libr",  "images/libr.jpg");
Rollover("linguaduale",  "images/linguaduale.jpg");
Rollover("bibl", "images/bibl.jpg");
Rollover("chisiamo", "images/chisiamo.jpg");
Rollover("web", "images/web.jpg");
Rollover("autori", "images/autori.jpg");