var theImages = new Array();
theImages[0] = 'img_01.jpg';
theImages[1] = 'img_02.jpg';
theImages[2] = 'img_03.jpg';
theImages[3] = 'img_04.jpg';
theImages[4] = 'img_05.jpg';
theImages[5] = 'img_06.jpg';
theImages[6] = 'img_07.jpg';
theImages[7] = 'img_08.jpg';
theImages[8] = 'img_09.jpg';
theImages[9] = 'img_10.jpg';
theImages[10] = 'img_11.jpg';
theImages[11] = 'img_12.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="/img/plaatjes/'+theImages[whichImage]+'" alt="MKB - Noord Actief voor ondernemers" border="0"/>');
}