function showrandomimage(x){
var theMovies = new Array()
for (var z=1; z < x+1; z=z+1){
theMovies[z-1] = 'rightbox-photo'+z+'.jpg'
}
var j = 0
var p = theMovies.length;
var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theMovies[i]
}
var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
	document.write('<img src="media/images/'+theMovies[whichImage]+'">');
}
showImage();
}