//Für den Roll-overeffekt bei Bildern
function bild_wechsel(id, effekt) {

	name_temp = document.getElementById(id).src;

	if (effekt == "over") {
		name = name_temp.substr(0,(name_temp.length-4));
		document.getElementById(id).src = name+"_.jpg";
		
	} else {
		name = name_temp.substr(0,(name_temp.length-5));
		document.getElementById(id).src = name+".jpg";
	}


}