// rotate
var theImages = new Array() 

theImages[0] = 'images/otc_01.jpg'
theImages[1] = 'images/otc_02.jpg'
theImages[2] = 'images/otc_03.jpg'
theImages[3] = 'images/otc_04.jpg'
theImages[4] = 'images/otc_05.jpg'
theImages[5] = 'images/otc_06.jpg'

// If more than two images, the next line would be:
// theImages[2] = 'images/otc_03.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]+'">');
}
//-->