function popup(mylink, windowname)
{
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
else
   href=mylink.href;
window.open(href, windowname, 'width=600,height=540,left=10,scrollbars=yes');
return false;
}




var theImages = new Array() 

theImages[0] = 'images/image01.jpg'
theImages[1] = 'images/image02.jpg'
theImages[2] = 'images/image03.jpg'
theImages[3] = 'images/image04.jpg'
theImages[4] = 'images/image05.jpg'
theImages[5] = 'images/image06.jpg'
theImages[6] = 'images/image07.jpg'
theImages[7] = 'images/image08.jpg'



var j = 0
var p = theImages.length;
var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theImages[i]
}
var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
document.write('<img src="'+theImages[whichImage]+'">');
}