gl_id="";
    linksvisible=null;

    function showLinks(id,pos) {   
      if (gl_id!=id) killLinks();
      gl_id=id;
      stopTimer();
      if (id=='wien') {
        document.getElementById("wien_id").style.left=pos;
      } else if (id=='linz') {
        document.getElementById("linz_id").style.left=pos;
      } else if (id=='graz') {
        document.getElementById("graz_id").style.left=pos;
      } else {
        document.getElementById(id).style.left=pos;
      } 
    }
    
    function killLinks() {
      document.getElementById("wien_id").style.left="-1000em";
      document.getElementById("linz_id").style.left="-1000em";
      document.getElementById("graz_id").style.left="-1000em";
      document.getElementById("lenzing_id").style.left="-1000em";
      document.getElementById("innsbruck_id").style.left="-1000em";
    }
    
    function stopTimer() {
      if (linksvisible) {
        window.clearTimeout(linksvisible);
        linksvisible=null;
      }
    }
    
    function startTimer() {
      linksvisible = window.setTimeout("killLinks()",3000);
    }