var theImagesLeft = new Array()
theImagesLeft[0] = 'images/splash_left_01.jpg'
theImagesLeft[1] = 'images/splash_left_02.jpg'
theImagesLeft[2] = 'images/splash_left_03.jpg'
theImagesLeft[3] = 'images/splash_left_04.jpg'

var j = 0
var p = theImagesLeft.length;

var preBufferLeft = new Array()
for (i = 0; i < p; i++){
   preBufferLeft[i] = new Image()
   preBufferLeft[i].src = theImagesLeft[i]
}

var whichImageLeft = Math.round(Math.random()*(p-1));
function ShowImageLeft(){
document.write('<img src="'+theImagesLeft[whichImageLeft]+'" width="331" height="200" border="0" alt="mutualphone">');
}