menu_01n = new Image;   menu_01n.src = "./image/menu_01n.gif";
  menu_02n = new Image;   menu_02n.src = "./image/menu_02n.gif";
  menu_03n = new Image;   menu_03n.src = "./image/menu_03n.gif";
  menu_04n = new Image;   menu_04n.src = "./image/menu_04n.gif";
  menu_05n = new Image;   menu_05n.src = "./image/menu_05n.gif";
  menu_06n = new Image;   menu_06n.src = "./image/menu_06n.gif";
  menu_07n = new Image;   menu_07n.src = "./image/menu_07n.gif";
 
  menu_01r = new Image;   menu_01r.src = "./image/menu_01r.gif";
  menu_02r = new Image;   menu_02r.src = "./image/menu_02r.gif";
  menu_03r = new Image;   menu_03r.src = "./image/menu_03r.gif";
  menu_04r = new Image;   menu_04r.src = "./image/menu_04r.gif";
  menu_05r = new Image;   menu_05r.src = "./image/menu_05r.gif";
  menu_06r = new Image;   menu_06r.src = "./image/menu_06r.gif";
  menu_07r = new Image;   menu_07r.src = "./image/menu_07r.gif";



  function ImageOver( imgName){

   imgOn = eval( imgName + "n.src");
   document[imgName].src = imgOn;

  }
  
  function ImageOut( imgName){

   document[imgName].src = eval( imgName + "r.src");

  }