var theImages = new Array() 

	theImages[0] = '/images/cncHeader0.jpg'
	theImages[1] = '/images/cncHeader1.jpg'
	theImages[2] = '/images/cncHeader2.jpg'
	theImages[3] = '/images/cncHeader3.jpg'
	theImages[4] = '/images/cncHeader4.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]+'">');
}