var theImages = new Array() 

theImages[0] = 'images/quote/1.gif'
theImages[1] = 'images/quote/2.gif'
theImages[2] = 'images/quote/3.gif'


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]+'">');

}