function StringArray (n) {
  this.length = n;
  for (var i =1; i <= n; i++) {
    this[i] = ' '

  }
}
image = new StringArray(6)
image[0] = '/images/banners01/banner_024.gif'
image[1] = '/images/banners01/banner_025.gif'
image[2] = '/images/banners01/banner_026.gif'
image[3] = '/images/banners01/banner_030.gif'
image[4] = '/images/banners01/banner_PBY2b.gif'
image[5] = '/images/banners01/banner_031.gif'

links = new StringArray(6)
links[0] = 'releaseinfo_ir024.htm';
links[1] = 'releaseinfo_ir025.htm';
links[2] = 'releaseinfo_ir026.htm';
links[3] = 'releaseinfo_ir030.htm';
links[4] = 'releaseinfo_irSv2.htm';
links[5] = 'releaseinfo_ir031.htm';

var ran = 60/image.length

function ranimage() {
	index =Math.floor(Math.random() * image.length) 
   return index;
}

index = ranimage();
document.write('<a href=\''+links[index]+'\'><img src=\''+image[index]+'\' border=0 height=60><\/a>');