function show_search()
{
   document.getElementById('edit-search-theme-form-1').style.backgroundImage = "url(/themes/nitobe/images/search.gif)";
}

function hide_search()
{
   document.getElementById('edit-search-theme-form-1').style.backgroundImage = "url(/themes/nitobe/images/search_blank.gif)";
}

function show_subscribe()
{
   document.getElementById('subscribe-mail').style.backgroundImage = "url(/themes/nitobe/images/email.gif)";
}

function hide_subscribe()
{
   document.getElementById('subscribe-mail').style.backgroundImage = "url(/themes/nitobe/images/email_blank.gif)";
}