function idx_switchImage(imgName, imgSrc)
{
if (document.images)
   {
      if (imgSrc != "none")
      {
         document.images[imgName].src = imgSrc;
      }
   }
}

function idx_addtoBookmark() {
        if (window.sidebar) { // firefox
                window.sidebar.addPanel(document.title, location.href,"");
        } else if( document.all ) { //MSIE
                window.external.AddFavorite( location.href, document.title);
        } else {
                alert("Use the bookmark feature of your browser to save the location of this page. (Ctrl/Cmd + D)");
        }
}