var theImages = new Array() 

theImages[0] = 'img/jukkapoika-tiskipekka-soundcheck2008.jpg'
theImages[1] = 'img/chyde-yleiso-soundcheck2008.jpg'
theImages[2] = 'img/lempijoe-soundcheck2008.jpg'
theImages[3] = 'img/nopsajalka-yleiso-soundcheck2008.jpg'
theImages[4] = 'img/pahatviinit-soundcheck2008.jpg'
theImages[5] = 'img/yleiso-soundcheck2008.jpg'
theImages[6] = 'img/stepa-snowcheck2009.jpg'
theImages[7] = 'img/stepa-soppa-snowcheck2009.jpg'
theImages[7] = 'img/raappana-snowcheck2009.jpg'
theImages[7] = 'img/graffiti-workshop-2-soundcheck2008.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]+'">');
}