function ShowHide(post_id) {
		id2 = 'qr_closed';
		if (post_id != '') expMenu(post_id);
		if (id2 != '') expMenu(id2);
    }
    
    function expMenu(id) {
      var itm = null;
      if (document.getElementById) {
        itm = document.getElementById(id);
      } else if (document.all){
        itm = document.all[id];
      } else if (document.layers){
        itm = document.layers[id];
      }
   
      if (!itm) {
       // do nothing
      }
      else if (itm.style) {
        if (itm.style.display == 'none') {
          itm.style.display = '';
        }
        else {
          itm.style.display = 'none';
        }
      }
      else {
        itm.visibility = 'show';
      }
    }