var b = new Array();
        b[0] = new Image(); b[0].src = "dia/screen1.jpg";
        b[1] = new Image(); b[1].src = "dia/screen2.jpg";
        b[2] = new Image(); b[2].src = "dia/screen2.jpg";
        b[3] = new Image(); b[3].src = "dia/screen4.jpg";
        b[4] = new Image(); b[4].src = "dia/screen5.jpg";
        b[5] = new Image(); b[5].src = "dia/screen6.jpg";
        b[6] = new Image(); b[6].src = "dia/screen7.jpg";
        b[7] = new Image(); b[7].src = "dia/screen8.jpg";
        b[8] = new Image(); b[8].src = "dia/screen9.jpg";
        b[9] = new Image(); b[9].src = "dia/screen10.jpg";
        b[10] = new Image(); b[10].src = "dia/screen11.jpg";
        b[11] = new Image(); b[11].src = "dia/screen12.jpg";
        var speed = 2000; // Delay in milliseconds
// Zufallszahl ermitteln
function randInt(min,max)
        {
        var div = (max - min) + 1
        var randNum = Math.random()
        for (var i = 0; i <= div - 1; i++)
                {
                if (randNum >= i / div && randNum < (i+1) / div)
                        {return i + min}
                }
        }

function diaShow()
        {
        var i = 0;
        i=randInt(0,b.length-1);
        document.images.show.src = b[i].src;
        window.setTimeout("diaShow()",speed);
        }