function showDiv(obj) {
        hideDiv();
        document.getElementById(obj).style.visibility = "visible";
    }

function showDiv2(obj) {
        document.getElementById(obj).style.visibility = "visible";
    }
    
            
function hideDiv() {
        document.getElementById("hotel").style.visibility = "hidden";
         document.getElementById("wellness").style.visibility = "hidden";
       
           document.getElementById("aktiv").style.visibility = "hidden";
            document.getElementById("preise").style.visibility = "hidden";
            document.getElementById("kontakt").style.visibility = "hidden";
               }