// rollover code 

// Protects from older browsers
if (document.images) 
{
// These two lines create an ON image and an OFF image. Each set of images needs these definitions. Each entry creates an IMAGE OBJECT.

eggoff = new Image()
eggoff.src = "images/joke1.gif"

eggon = new Image()
eggon.src = "images/joke2.gif"
}

// Makes it happen...
function roll(s,x,t)
{
if (document.images)
	{
		document.images[s].src=eval(x+ '.src')
	}
//images[s]
}