function makeArray() {
        this.length = makeArray.arguments.length
        for (var i = 0; i < this.length; i++) this[i+1] = makeArray.arguments[i]
}
var pix = new makeArray ("1.jpg", "2.jpg", "3.jpg", "4.jpg", "5.jpg", "6.jpg", "7.jpg" );
var nummer = 1;
function wechsle() {
        document.image.src = "images/bilderwechsel/show_"+pix[nummer];
        nummer += 1;
        if (nummer == 8) nummer = 1;
                setTimeout("wechsle()", 5000);
}