function display(id){
        if (document.getElementById(id).style.display == "none"){
          document.getElementById(id).style.display = "";
        }
        else{
          document.getElementById(id).style.display = "none";
        }
      }
      function display_all(show){
        if (!document.getElementsByTagName) return;
        var elements = document.getElementsByTagName("div");
        for (var i=0; i<elements.length; i++){
          //var anchor = anchors[i];
          if (elements[i].className == "info"){
            elements[i].style.display = (show == 0) ? "none" : "";
          }
        }
      }