function openNav() {
    var showNav = `
    #CandleID{
        opacity: 0;
        pointer-events: none;
    }

    #uberuns{
        pointer-events: auto;
        opacity: 1;
      }
      #abmelden{
        pointer-events: auto;
        opacity: 1;
      }
      #buecher{
        pointer-events: auto;
        opacity: 1;
      }
      #meinebuecher{
        pointer-events: auto;
        opacity: 1;
      }
      
      #erweitertesuche{
        position: fixed;
        right: 450px;
        top: 13px;
        opacity: 1;
        pointer-events: auto;
      }
    
      #nav-toggle {
        opacity: 1;
        pointer-events: auto;
      }
      .suchleiste{
        opacity: 1;
        pointer-events: auto;
      }
      #buttonID{
        opacity: 1;
        pointer-events: auto;
      }

      .suchleiste{
        position: fixed;
        right: 233px;
        top: 0px;
      }
      #buttonID{
        position: fixed;
        right: 240px;
        top: 0px;
      }
   
      #uberuns{
        position: fixed;
        left: 43%;
        top: 96px;
        width: 120px;
        height: 35px;
        background-color:#664220 ;
        color:rgb(255, 255, 255);

      }
      #abmelden{
        position: fixed;
        left: 0px;
        top: 150px;
        width: 120px;
        height: 35px;
        background-color:#664220 ;
        color:rgb(255, 255, 255);

      }
      #buecher{
        position: fixed;
        left: 43%;
        top: 43px;
        width: 120px;
        height: 35px;
        background-color:#664220 ;
        color:rgb(255, 255, 255);
        padding-right:10px;
        padding-left: 8px;
        padding-top: 15px;
        padding-bottom: 0px;
        text-align: center;
        text-decoration: none;
      }
      


      #meinebuecher{
        position: fixed;
        left: 43%;
        top: 149px;
        width: 120px;
        height: 35px;
        background-color:#664220 ;
        color:rgb(255, 255, 255);
        padding-right:10px;
        padding-left: 8px;
        padding-top: 15px;
        padding-bottom: 0px;
        text-align: center;
        text-decoration: none;
      }


    `;
    var closeNav =  `#CandleID{
        opacity: 1;
        pointer-events: auto;
    }

    
    `;
    if (document.getElementById('nav-toggle').checked) {
		var styleSheet = document.createElement("style")
		styleSheet.innerText = showNav
		document.head.appendChild(styleSheet)
    } else {
        var link = document.createElement('link');
 
        // set the attributes for link element
           link.rel = 'stylesheet';
     
        link.type = 'text/css';
     
        link.href = 'style.css';
 
        // Get HTML head element to append
        // link element to it
        document.getElementsByTagName('HEAD')[0].appendChild(link);
        var styleSheet = document.createElement("style")
		styleSheet.innerText = closeNav
		document.head.appendChild(styleSheet)
    }
}

function unset()
{
  
    var link = document.createElement('link');
    var head  = document.getElementsByTagName('head')[0];
    // set the attributes for link element
       link.rel = 'stylesheet';
 
    link.type = 'text/css';
 
    link.href = 'style.css';
    link.media = 'all';
    // Get HTML head element to append
    // link element to it
    //document.getElementsByTagName('head').appendChild(link);
    head.appendChild(link);
   
  var styleSheet = document.createElement("style")
styleSheet.innerText = closeNav
document.head.appendChild(styleSheet)
}