function imgOn(img_name,img_src,text) {
	document[img_name].src=img_src;
	document.getElementById('detail_text').value=text;
}
function imgOn2(img_name,img_src,text2) {
	document[img_name].src=img_src;
	document.getElementById('detail_text2').value=text2;
}
function imgOn3(img_name,img_src,text3) {
	document[img_name].src=img_src;
	document.getElementById('detail_text3').value=text3;
}


/* E-Mail */
function kontakt_pruef() {
	if(window.document.kontakt.name.value=="") {
		alert("Bitte einen Namen eintragen!");
		return false;
	}
	if(window.document.kontakt.email.value.indexOf('@') == -1){
		alert("Bitte eine gültige E-Mail-Adresse eintragen!");
		return false;
	}
}