function random_img(){
var myimages=new Array();
myimages[1]="news2.gif";
myimages[2]="news2.gif";
myimages[3]="news2.gif";
myimages[4]="news2.gif";
myimages[5]="news2.gif";

var ry=Math.floor(Math.random()*myimages.length);
if (ry==0){ ry=1; }
document.write('<img src="img/thumbs/'+myimages[ry]+'" style="width:170px; height:85px; border: 1px solid #fff;" alt="News &amp; Resources" />')
}

random_img();