function cambia(ImgName, ImgSource)
{
	document.images[ImgName].src = eval(ImgSource+'.src');
}

var linkon = new Image();
linkon.src = "images/shop_on.jpg";
var linkoff = new Image();
linkoff.src = "images/shop.jpg";

var linkon2 = new Image();
linkon2.src = "images/whois_on.jpg";
var linkoff2 = new Image();
linkoff2.src = "images/whois.jpg";

var linkon3 = new Image();
linkon3.src = "images/newsletter_on.jpg";
var linkoff3 = new Image();
linkoff3.src = "images/newsletter.jpg";

var linkon4 = new Image();
linkon4.src = "images/art_on.jpg";
var linkoff4 = new Image();
linkoff4.src = "images/art.jpg";

var linkon5 = new Image();
linkon5.src = "images/good_on.jpg";
var linkoff5 = new Image();
linkoff5.src = "images/good.jpg";

var linkon6 = new Image();
linkon6.src = "images/blog_on.jpg";
var linkoff6 = new Image();
linkoff6.src = "images/blog.jpg";