// Some variables
var base= "/images/portfolio/"
var nrm = new Array();
var omo = new Array();
var stuff = new Array('CRC');

// Pre-load part.
if (document.images)
{
    for (i=0;i<stuff.length;i++)
    {
	nrm[i] = new Image;
	nrm[i].src = base + stuff[i] + ".png"
	omo[i] = new Image;
	omo[i].src = base + stuff[i] + "b.png";
    }
}

// The functions: first mouseover, then mouseout
function over(no)
{
    if (document.images)
    {
	document.images[stuff[no]].src = omo[no].src
    }
}

function out(no)
{
    if (document.images)
    {
	document.images[stuff[no]].src = nrm[no].src
    }
}