function randomImg(maxImg,demomodus) {
	//zahl >= 1 und <= maxImg
	var randomNumb = parseInt(maxImg * Math.random()) + 1;

	if (demomodus == 0) {//publizieren
		var imgdir = 'siteimg';
	} else {
		var imgdir = '../siteimg';
	}
	var out = '<img src="'+imgdir+'/startbilder/start'+randomNumb+'.jpg" border="0" vspace="0" hspace="0" width="720" height="869" align="left" alt="">';
	document.write(out);
}