function image() {
};

image = new image();
number = 0;
image[number++] = "<img src='../images/nieuws/zomer_02.jpg' width='224' height='168' alt='Zomermarkt' border='1'>"
image[number++] = "<img src='../images/nieuws/Rommelmarkt-D.gif' width='225' height='169'  alt='Rommelmarkt' border='1'>"
image[number++] = "<img src='../images/nieuws/markt-gouda.gif' width='225' height='169' title='Gouda' border='1''>"

increment = Math.floor(Math.random() * number);

document.write(image[increment]);