var index = Math.floor(Math.random()*2);
	var filenames = new Array ("./images/sponsors/200_Affymetrix.jpg","./images/sponsors/200_Agilent.jpg","./images/sponsors/200_Analis.gif","./images/sponsors/200_Annovum.jpg","./images/sponsors/200_Bioke.jpg","./images/sponsors/200_Biolegio.jpg","./images/sponsors/200_Caliper.png","./images/sponsors/200_Cartagenia.jpg","./images/sponsors/200_Genzyme.gif","./images/sponsors/200_Illumina.jpg","./images/sponsors/200_Innogenetics.jpg","./images/sponsors/200_IDT.jpg","./images/sponsors/200_LifeTechnologies.png","./images/sponsors/200_Multiplicon.jpg","./images/sponsors/200_OGT.jpg","./images/sponsors/200_Qiagen.jpg","./images/sponsors/200_Roche.jpg","./images/sponsors/200_Sanbio.jpg","./images/sponsors/200_Shimadzu.jpg","./images/sponsors/200_Shire.jpg","./images/sponsors/200_Sopachem.jpg","./images/sponsors/200_VWR.jpg");
    var images = new Array();
	
	for (var i = 0; i < filenames.length; i++) {
	  images[i] = new Image();
      images[i].src = filenames[i];
    }
	
	function rotate() {
      if (document.all) {
        document.images.slideshow.style.filter="blendTrans(duration=2)";
        document.images.slideshow.style.filter="blendTrans(duration=100)";
        document.images.slideshow.filters.blendTrans.Apply();
      }
      document.images.slideshow.src = images[index].src;
      if (document.all) document.images.slideshow.filters.blendTrans.Play();	
	
	  window.setTimeout("rotate()",5000); // 5 sec
	  if (index == images.length - 1) index = 0;
	  else index++;
	}