function open_item()
{
  var item_div = window.parent.document.getElementById('item_div');
  item_div.style.visibility='visible';
  resizeItemFrame(window.parent.win_x,window.parent.win_y);
  return true;
}

function show_item()
{
  var frame_div = document.getElementById('frame_div');
  var item_div = window.parent.document.getElementById('item_div');
  if (!window.parent.document.getElementById('close_button').style.filter) 
    window.parent.document.getElementById('close_img').style.visibility='visible';
  window.parent.document.getElementById('close_button').style.visibility='visible';
  item_div.innerHTML = frame_div.innerHTML;
  frame_div.innerHTML = "";
  open_item();
  return true;
}

function close_item()
{
  var href_obj = window.parent.document.location.href;
  var href_obj = href_obj.substr(0,href_obj.indexOf("item=")-1);
  window.parent.document.location.href = href_obj;
//  window.parent.document.location.replace(href_obj);
  return true;
}

function add_item_to_url(url)
{
  var href_obj = window.parent.location.href;
  var begin = href_obj.indexOf('item=');
  if (begin >= 0) {
    var end = href_obj.indexOf('&',begin);
    if (end == -1) 
      href_obj = href_obj.substr(0,begin-1); 
    else {
      var href_obj_tmp = href_obj.substr(0,begin-1) + href_obj.substr(end);
      href_obj = new_href_obj;
    }
  }
  if (href_obj.indexOf('?') >= 0) href_obj = href_obj + '&'; else href_obj = href_obj + '?';
  window.parent.location.href = href_obj + 'item=' + url;
  
  return true;
}


//function open_item()
//{
//  var item_frame_style=window.parent.document.getElementById('item_frame').style;
//  item_frame_style.visibility='visible';
//  resizeItemFrame(window.parent.win_x,window.parent.win_y);
//  window.parent.document.getElementById('close_img').style.visibility='visible';
//  window.parent.document.getElementById('close_button').style.visibility='visible';
////  window.parent.mouseOut(0);
//  return true;
//}
  
//function close_item()
//{
//  document.getElementById('close_button').style.visibility='hidden';
//  document.getElementById('close_img').style.visibility='hidden';
//  var item_frame_style=document.getElementById('item_frame').style;
//  item_frame_style.visibility='hidden';
//  item_frame_style.width = '0px';
//  item_frame_style.height = '0px';
//  return true;
//}