// JavaScript Document

function initRollOverImages() {
  var image_cache = new Object();
  $("img.swap").each(function(i) {
    var imgsrc = this.src;
    var dot = this.src.lastIndexOf('.');
    var imgsrc_on = this.src.substr(0, dot) + '_on' + this.src.substr(dot, 4);
    image_cache[this.src] = new Image();
    image_cache[this.src].src = imgsrc_on;
    $(this).hover(
      function() { this.src = imgsrc_on; },
      function() { this.src = imgsrc; });
  });
}

$(document).ready(initRollOverImages);



var openedMenu = null;
var submenuTimer;

//²å½ü¥á¥Ë¥å¡¼£õ#|¥¤¥ó¥¿£å€¡¦¡¦¡¦
function menuOvr(id){
  // ³«£á€Ãà¡à¡¦¡ãj¥å¡¼£ó¡¦"£á¡ãj¥å¡¼£ó" ¤ç€ÍçB£ì!B
  if (openedMenu && openedMenu != id){
    CloseMenu(id);
  }
  // ¥µ¥Ö¥¦¥£¥ó¥É¥¦£öŽŽ¦
  OpenMenu(id);
}

//¥ì¥¤¥ä¥á¥Ë¥å¡¼£öŽŽ¦
function OpenMenu(id){ 
  if ( document.getElementById ){
    document.getElementById( id ).style.visibility = 'visible';
  }else if ( document.all ){
    document.all( id ).style.visibility = 'visible';
  }else if ( document.layers ){
    document.layers[ id ].visibility = 'show';
  }
  clearTimeout(submenuTimer);
  openedMenu = id;
}

//¥ì¥¤¥ä¥á¥Ë¥å¡¼£ö¶é/¡¦
function CloseMenu(){ 

  if ( document.getElementById ){
    document.getElementById( openedMenu ).style.visibility = 'hidden';
  }else if ( document.all ){
    document.all( openedMenu ).style.visibility = 'hidden';
  }else if ( document.layers ){
    document.layers[ openedMenu ].visibility = 'hide';
  }
  openedMenu = null;
}