i want to create a random image and its url, i mean not the link of the image, but in addition to image's link, i want the specified URL, so that random image was displayed and when u click on it, u go to the specified URL

here is my javascript:

    function random_imglink(){
      var myimages=new Array()
      //specify random images below. You can have as many as you wish
      myimages[1]="/documents/templates/projedepo/banner/canon.jpg"
      myimages[2]="/documents/templates/projedepo/banner/indigovision.jpg"

      var ry=Math.floor(Math.random()*myimages.length)

      if (ry==0)
         ry=1

    var randomImage = '<img src="'+myimages[ry]+'" height="420" width="964" />';
    document.getElementById("image2").innerHTML = randomImage;
    }
    random_imglink()

Here is my HTML:

<div id="slider_container">    
<div id="image2">
</div>
<div id="thumb2">
<a href="#" rel="/documents/templates/projedepo/banner/canon.jpg" class="image2" ><img title="Canon" class="slider_thumb" src="/documents/templates/bilgiteknolojileri/images/t_flash/t1.png" border="0"/></a>
<a href="#" rel="/documents/templates/projedepo/banner/indigovision.jpg" class="image2"><img title="IndogoVision" class="slider_thumb" src="/documents/templates/bilgiteknolojileri/images/t_flash/t2.png" border="0"/></a>
</div></div>