function ch_city(){
		city = document.form1.start.value;
		
		verlink = document.form1.action.value = "http://maps.google.de/maps?f=d&hl=de&geocode=&saddr="+ city +"&daddr=Sonnenalpe+Nassfeld+Hermagor,+Hermagor,+Kärnten";
		open(verlink);
}