function show_more(_id) {
          if (document.getElementById("more_" + _id)) {
            if (document.getElementById("more_" + _id).style.display == "block") {
                document.getElementById("more_" + _id).style.display = "none";
                document.getElementById("show_more_" + _id).innerHTML = "read more";
              } else {
                document.getElementById("more_" + _id).style.display = "block";
                document.getElementById("show_more_" + _id).innerHTML = "close";
            }
          }
        }