var max = 10;
var nrImages = 5;

function makeImages()
   {
	  this[0] = "images/banner0.jpg"; 
      this[1] = "images/banner3.jpg";
      this[2] = "images/banner2.jpg"; 
      this[3] = "images/banner3.jpg";
      this[4] = "images/banner1.jpg";

      this.length = nrImages;
   }

function makeLinks() 
   {
	 this[0] = "#";
     this[1] = "http://www.dotstore.com.br/copyfaxstore";
     this[2] = "idpi/index.htm";
     this[3] = "rotuladores/index.htm";
     this[4] = "outsourcing/index.htm";
     


     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;
         }
  }