Anzahllinks = 94;

mouseoverl1 = '<img onmouseover="auf(';
mouseoverl2 = ')" onmouseout="zu(';
mouseoverl3 = ')"';
mouseoverl4 = ' src="images/random/bild';
mouseoverl5 = '.jpg" border="0" width="100" height="75" alt="Weisse Schäferhunde">';

function randombildli() {
var a = Math.ceil(Math.random() * Anzahllinks);
document.write(mouseoverl1 + "'rbl" + a + "'" + mouseoverl2 + "'rbl" + a + "'" + mouseoverl3 + mouseoverl4 + a + mouseoverl5);
}