function showImage(imageUrl, title, width, height) 
{
	nheight = height+29;
	nwidth = width+10;
	optionen = "width=" + nwidth + ",height=" + nheight + ",left=50,top=50,scrollbars=no";
	url = "content/showimage.php?image=../images/" + imageUrl + "&title=" + title + "&width=" + width + "&height=" + height;
	imw = window.open(url, "image_fenster", optionen);
	imw.resizeTo(nwidth, nheight);
	imw.innerWidth = width;
	imw.innerHeight = height;
	imw.focus();
}

function checkKontaktData() 
{
	var re_email = /^([_a-zA-Z0-9-]+)(\.[_a-zA-Z0-9-]+)*@([a-zA-Z0-9-]+\.)+([a-zA-Z]{2,3})$/;
	var name = document.kontakt_form.kontakt_name.value;
	var anschrift = document.kontakt_form.kontakt_anschrift.value;
	var email = document.kontakt_form.kontakt_email.value;
	var nachricht = document.kontakt_form.kontakt_nachricht.value;
	var checked = true;
	if (name.length==0 || anschrift.length==0 || nachricht.length==0 || (re_email.test(email))==false || email.length==0) {
		alert("Bitte checken Sie Ihre Eingaben!");
		checked = false;
	}
	if (checked) {
		document.kontakt_form.method = "post";
                document.kontakt_form.action = "kontakt2.htm";M
		document.kontakt_form.submit();
	} 
	return checked;
}