var penhaimages=new Array()
//specify random images below. You can have as many as you wish
penhaimages[0]="/images/h01.jpg"
penhaimages[1]="/images/h02.jpg"
penhaimages[2]="/images/h03.jpg"
penhaimages[3]="/images/h04.jpg"
penhaimages[4]="/images/h05.jpg"
var ry=Math.floor(Math.random()*penhaimages.length)

document.write('<p class="centre_img"><img src=" '+penhaimages[ry]+' " width=448 height=136 style="BORDER: #c8c8c8 1px solid;"></p>')