var open = null;
var tabMenu = null;

function openMenu( menu )
{
      if( open != null )
            open.style.display = "none";
      
      open = document.getElementById( menu );
      open.style.display = "block";

      if( tabMenu != null ) {
            links = tabMenu.getElementsByTagName( "a" );

            for( i = 0; i < links.length; i++ ) {
                  links[i].style.backgroundColor = '#EFE5C5';
            }
      }
}

function initMenu( id ) {
      var menu = document.getElementById( id );

      tabMenu = menu;

      links = menu.getElementsByTagName( "a" );

      for( var i = 0; i < links.length; i++ ) {
            links[i].style.cursor = "pointer";

            if( links[i].rel != "" ) {
                  links[i].oldonclick = links[i].onclick;
                  links[i].onclick = function() {
                     openMenu( this.rel );
                     this.style.backgroundColor = "#D1C7A5";

                     if( this.oldonclick != null ) {
                        this.oldonclick();
                     }
                  };
            }
      }

      openMenu( links[0].rel );
      links[0].style.backgroundColor = "#D1C7A5";
}