<!--

var DHTML = (document.getElementById || document.all || document.layers)

function getObj(name) {
  if (document.getElementById)
    {
    this.obj = document.getElementById(name);
    this.style = document.getElementById(name).style;
  } else if (document.all) {
  
    this.obj = document.all[name];
    this.style = document.all[name].style;
  } else if (document.layers) {
    this.obj = document.layers[name];
    this.style = document.layers[name];
  }
 }

function invi(flag) {
  if (!DHTML) return;
    var x = new getObj('detect_set');
    var y = new getObj('media_module_player');
    x.style.display = (flag) ? 'none' : 'block'
    y.style.display = (flag) ? 'block' : 'none'
  }

-->