var site_menu = new Array();
function menu_add( id ) { site_menu[site_menu.length] = id; }
function menu_to( id )
{
  for (var i in site_menu)
  {
    var td1 = document.getElementById( "menuleft"+site_menu[i] );
    var td2 = document.getElementById( "menuright"+site_menu[i] );
    var td3 = document.getElementById( "section_"+site_menu[i] );
    if (!td1) return true;
    var display="none";
    if (site_menu[i] == id) 
    { display="block";
      td1.className = td1.className.replace( /^bullet-(s-)?/, "bullet-s-" );
      td2.className = td2.className.replace( /^data-(s-)?/, "data-s-" );
    }
    else
    { 
      td1.className = td1.className.replace( /^bullet-s-/, "bullet-" );
      td2.className = td2.className.replace( /^data-s-/, "data-" );
    }
    td3.style.display = display;
  }
  return false;
}


function preloadImages( imageRoot )
{
  if (document.images) 
  {

    preloadPics( imageRoot+"icons",
              "auth", "auth_",
              "top2", "top2_", 
              "mail0", "mail0_", 
              "sitemap0", "sitemap0_", 
              "mail", "mail2", "mail2_", 
              "sitemap", "sitemap2", "sitemap2_", 
              "siteinfo", "siteinfo2", "siteinfo2_"
             );
    preloadPics( imageRoot+"buttons",
              "search", "search_", "search__",
              "send",   "send_",   "send__"
             );

  }

  preloadFlag = true;
}