When I open a new site with the selectbox for example site x then the option x is selected like it should but when I return by clicking the arrow in the left corner above I return to site y but option x is still selected.
Can anyone help me?
 <nav id="navigation" class="navigation">
  <a href="index_V1.html">Home</a>
 <select id="Menu">
   <option disabled selected hidden> # </option>
    <option  href="#">#1</option>
    <option href="#">#2</option>
    <option href="#">#3</option>
   <option href="#">#4</option>
 </select>
 <script>
   document.getElementById('Menu').onchange = function() {
     window.location.href = 
     this.children[this.selectedIndex].getAttribute('href');
   }
 </script>
What should I add to the script to avoid that problem_
Thank you
 
     
    