var rImgs  = new Array();
var rOvers = new Array();
var idx    = -1;

rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/pathfinder-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/pathfinder-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/gmbc-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/gmbc-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/communities-n.jpg';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/communities-o.jpg'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/niceic-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/niceic-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/eca-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/eca-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/est-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/est-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/ab-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/ab-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/cs-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/cs-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/anuk-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/anuk-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/rs-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/rs-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/corgi-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/corgi-o.gif'
rImgs[++idx]    = new Image();
rImgs[idx].src  = 'assets/images/big-lotto-n.gif';
rOvers[idx]     = new Image();
rOvers[idx].src = 'assets/images/big-lotto-o.gif'

function rollover(imgID) {
	var rImg  = $("rover"+imgID);
	var rType = rImg.src.indexOf("-n") != -1;
	rImg.src = rType ? rOvers[imgID].src : rImgs[imgID].src;
}