function insertRandomImage() {
	var img = Math.floor(Math.random()*8) + 1;
	document.write('<img src="img/leiste/' + img + '.jpg" width="943" height="200"/>');
}

function insertRandomImage2() {
	var img = Math.floor(Math.random()*5) + 1;
	document.write('<img src="img/leiste2/' + img + '.jpg" width="943" height="200"/>');
}