var omenu = $("catalogs");
   
  var collections_image = Array(1);
  collections_image[0] = new Image();
  collections_image[0].src = "/images/collections.gif";
  collections_image[1] = new Image();
  collections_image[1].src = "/images/collections_over.gif";


// ----------------------------------------------------------------------------
  function collapseNavi(onode) {
    if (! onode) { return; }
    if (onode.childNodes.length > 0) {
      for (var i=0; i<onode.childNodes.length; i++) {
        var cnode = onode.childNodes[i];
        if (cnode.nodeName == "DIV") {
          Element.setStyle(cnode, { display : "none" } );
        } else {
          if (cnode.nodeName == "A") {
            cnode.onclick = function () { 
                              toggleNavi(this.parentNode.getElementsByTagName("DIV")[0], this.href); 
                              return false; 
                            };
          }
        }
        collapseNavi(cnode);
      }
    }
  }

// ----------------------------------------------------------------------------
  function toggleNavi(onode, locref) {
    
    var bgimage = "/images/arrow.gif";
    if (!locref) { return false; }
    if (!onode) { location.href = locref; return; }    
     
    if (onode.getStyle("display") == "block") {
      Effect.BlindUp(onode, {duration: 0.5});
    } else {
      var bgimage = "/images/down-arrow.gif";
      Effect.BlindDown(onode, {duration: 0.5});
    }
    /*
    Element.setStyle(onode, {
                     backgroundImage: "url('"+bgimage+"')",
                     backgroundPosition: "top right",
                     backgroundRepeat: "no-repeat"
                     });*/
  }

// ----------------------------------------------------------------------------
  function swap_showmenu(cidx) {
    if (cidx == 1) {
      $("navititle").setStyle(
        {color: "#606060"}
      )
    } else {
      $("navititle").setStyle(
        {color: "#909090"}
      )
    }
  }
  
// ----------------------------------------------------------------------------
  if (omenu) {
    /*
    collapseNavi(omenu);
    Element.setStyle(omenu, { display: "none" } );
    
    Event.observe("showmenu", "click", 
                  function(e) { 
                    if (omenu.style.display == "") {
                      Effect.BlindUp(omenu, {duration: 0.5});
                    } else {
                      Effect.BlindDown(omenu, {duration: 0.5});
                    } 
                  } 
                 );
    Event.observe("showmenu", "mouseover", 
                  function() {
                    swap_showmenu(1);
                  } );
    Event.observe("showmenu", "mouseout", 
                  function() {
                    swap_showmenu(1);
                  } );
    */
                

  }