/*
 * Script to show hide elements.
 */

    function show_hide(id, image) {
      var el = document.getElementById(id);
      var str = image.src; 
      var pos = str.lastIndexOf("/");
     
      if (el.style.display == '') {
        el.style.display = 'none';
        image.src = str.slice(0,pos) + "/cross.png?ln=img";
      } else {
        el.style.display = '';
        image.src = str.slice(0,pos) + "/minus.png?ln=img";
      }
    }