var max = 7;
var nrImages = 7;
function makeImages() {
this[0] = "http://www.portalfilmesonline.com/img/assistirfilmes2.gif";
this[1] = "http://www.portalfilmesonline.com/img/assistirfilmes2.gif";
this[2] = "http://www.portalfilmesonline.com/img/assistirfilmes5.gif";
this[3] = "http://www.portalfilmesonline.com/img/assistirfilmes.gif";
this[4] = "http://www.portalfilmesonline.com/img/assistirfilmes5.gif";
this[5] = "http://www.portalfilmesonline.com/img/assistirfilmes.gif";
this[6] = "http://www.portalfilmesonline.com/img/assistirfilmes5.gif";
this[7] = "http://www.portalfilmesonline.com/img/assistirfilmes2.gif";
this.length = nrImages;
}

function makeLinks() {
this[0] = "#";
this[1] = "#";
this[2] = "#";
this[3] = "#";
this[4] = "#";
this[5] = "#";
this[6] = "#";
this[7] = "#";
this.length = nrImages;
}

var vetImages = new makeImages();
var vetLinks = new makeLinks();
var x = Math.round(Math.random()*max);
var y = max / nrImages;
for(var cont = 1;cont*y<= max;cont++) {
if (x <= (cont*y)) {
document.write("<a href="+vetLinks[cont-1]+" target=_blank><img src="+vetImages[cont-1]+" border=0></a>");
break;
}
}