if(document.images) {
  img1on = new Image();
  img1on.src = "img/menu/news_on.jpg";
  img1off = new Image();
  img1off.src = "img/menu/news_off.jpg";

  img2on = new Image();
  img2on.src = "img/menu/about_on.jpg";
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  img4on = new Image();
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  img4off.src = "img/menu/banquethall_off.jpg";

  img5on = new Image();
  img5on.src = "img/menu/autodecor_on.jpg";
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  img5off.src = "img/menu/autodecor_off.jpg";

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  img6on.src = "img/menu/photo_on.jpg";
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  img7on.src = "img/menu/video_on.jpg";
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  img8on = new Image();
  img8on.src = "img/menu/floristic_on.jpg";
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  img8off.src = "img/menu/floristic_off.jpg";

  img9on = new Image();
  img9on.src = "img/menu/leadings_on.jpg";
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  img9off.src = "img/menu/leadings_off.jpg";

  img10on = new Image();
  img10on.src = "img/menu/showprograms_on.jpg";
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  img10off.src = "img/menu/showprograms_off.jpg";

  img11on = new Image();
  img11on.src = "img/menu/services_on.jpg";
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  img11off.src = "img/menu/services_off.jpg";

  img12on = new Image();
  img12on.src = "img/menu/info_on.jpg";
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  img12off.src = "img/menu/info_off.jpg";

  img13on = new Image();
  img13on.src = "img/menu/gallery_on.jpg";
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  img13off.src = "img/menu/gallery_off.jpg";

  img14on = new Image();
  img14on.src = "img/menu/contacts_on.jpg";
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  img14off.src = "img/menu/contacts_off.jpg";
}

function imgOn(imgName) {
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    document[imgName].src = eval(imgName + "on.src");
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}

function imgOff(imgName) {
  if(document.images)      {
    document[imgName].src = eval(imgName + "off.src");
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}