var theImages = new Array() theImages[0] = 'img/1.jpg' theImages[1] = 'img/2.jpg' theImages[2] = 'img/3.jpg' theImages[3] = 'img/4.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(''); }