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

  }
}
image = new StringArray(4)
image[0] = '/images/main_newreleases/main_newrelease_pby2.jpg'
image[1] = '/images/main_newreleases/main_newrelease_ir031.gif'
image[2] = '/images/main_newreleases/main_newrelease_ir033.jpg'
image[3] = '/images/main_newreleases/main_newrelease_ir034.jpg'

links = new StringArray(4)
links[0] = 'releaseinfo_irSv2.htm';
links[1] = 'releaseinfo_ir031.htm';
links[2] = 'releaseinfo_ir033.htm';
links[3] = 'releaseinfo_ir034.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=231><\/a>');