// "Random" image generation
// Jonathan Lequire

//Header images
var hdrImgs = new Array()

hdrImgs[0] = 'img/hdr_01.png'
hdrImgs[1] = 'img/hdr_02.png'
hdrImgs[2] = 'img/hdr_03.png'

var p = hdrImgs.length;

var whichImage = Math.round(Math.random()*(p-1));

function showHdrImage() {
  document.write('<a href="index.html" border="0" title="Home"><img src="'+hdrImgs[whichImage]+'" width="769" height="105" border="0" usemap="#m_hdr_01" alt="School of Computing"></a>');
}