var routeSum = 0;
var start_value;
var end_value; 

function changeRoute(wert){

        if(routeSum == 0){
            start_value = document.routenplaner.start.value;
            end_value = document.routenplaner.end.value; 
            routeSum++;
        }
    
        if(wert == 0){
            document.getElementById("calendar_events_route_from").style.color = "rgb(51, 51, 51)";
            document.getElementById("calendar_events_route_from").style.textDecoration = "underline";
            document.getElementById("calendar_events_route_to").style.color = "rgb(0, 0, 0)";
            document.getElementById("calendar_events_route_to").style.textDecoration = "none";
    
            document.routenplaner.start.value = end_value;
            document.routenplaner.end.value = start_value;
        }
        
        if(wert == 1){
            document.getElementById("calendar_events_route_from").style.color = "rgb(0, 0, 0)";
            document.getElementById("calendar_events_route_from").style.textDecoration = "none";
            document.getElementById("calendar_events_route_to").style.color = "rgb(51, 51, 51)";
            document.getElementById("calendar_events_route_to").style.textDecoration = "underline";
    
            document.routenplaner.start.value = start_value;
            document.routenplaner.end.value = end_value;
        }

}


function emailDecode(wert1,wert2,wert3){
    var mail = wert3+"@"+wert2+wert1;
    location.href = "mailto:"+mail;
}