function werbung() 
    {
        var e = document.getElementById("werbung");
        var d = document.getElementById("impressum");  
        var l = document.getElementById("lnkWerbung");
        var k = document.getElementById("lnkImpressum");         
        if (e.style.display == "none")
        {
        e.style.display = "inline";
        d.style.display = "none"; 
        l.className = "over";  
        k.className = "";     
        }
        else
        {
        e.style.display = "none";
        l.className = "";
        }
    }
    
    function wetter() 
    {
        var e = document.getElementById("wetter"); 
        var l = document.getElementById("lnkWetter");         
        if (e.style.display == "none")
        {
        e.style.display = "inline"; 
        l.className = "over";      
        }
        else
        {
        e.style.display = "none";
        l.className = "";
        }
    }
    
    function impressum() 
    {
        var e = document.getElementById("impressum");
        var d = document.getElementById("werbung"); 
        var l = document.getElementById("lnkImpressum");
        var k = document.getElementById("lnkWerbung");          
        if (e.style.display == "none")
        {
        e.style.display = "inline";
        d.style.display = "none";  
        l.className = "over";
        k.className = "";     
        }
        else
        {
        e.style.display = "none";
        l.className = "";
        }
    }