var img = new Array() // do not change this
    img[0] = '/images/gf_logo/0.png'
    img[1] = '/images/gf_logo/1.png'
    img[2] = '/images/gf_logo/2.png'
    img[3] = '/images/gf_logo/3.png'
    img[4] = '/images/gf_logo/4.png'
    img[5] = '/images/gf_logo/5.png'
    img[6] = '/images/gf_logo/6.png'
    img[7] = '/images/gf_logo/7.png'
    img[8] = '/images/gf_logo/8.png'
    img[9] = '/images/gf_logo/9.png'
    var j = 0
    var p = img.length;
    var preBuffer = new Array()
    for (i = 0; i < p; i++){
       preBuffer[i] = new Image()
          preBuffer[i].src = img[i]
	  }
	  var whichImage = Math.round(Math.random()*(p-1));
	  function showImage(){
	  document.write('<img src="'+img[whichImage]+'" width=156>');
	  }