var onImgs = new Array();
onImgs['i10'] = new Image();
onImgs['i11'] = new Image();
onImgs['i12'] = new Image();
onImgs['i13'] = new Image();
onImgs['i14'] = new Image();
onImgs['i15'] = new Image();
onImgs['i10'].src = '/img/en/top_menu_10_on.jpg';
onImgs['i11'].src = '/img/en/top_menu_11_on.jpg';
onImgs['i12'].src = '/img/en/top_menu_12_on.jpg';
onImgs['i13'].src = '/img/en/top_menu_13_on.jpg';
onImgs['i14'].src = '/img/en/top_menu_14_on.jpg';
onImgs['i15'].src = '/img/en/top_menu_15_on.jpg';

function imgOn(imgName){
  if (document.images){
    document.images[imgName].style.cursor = 'pointer';
    document.images[imgName].src = onImgs[imgName].src;
  }
}

var offImgs = new Array();
offImgs['i10'] = new Image();
offImgs['i11'] = new Image();
offImgs['i12'] = new Image();
offImgs['i13'] = new Image();
offImgs['i14'] = new Image();
offImgs['i15'] = new Image();
offImgs['i10'].src = '/img/en/top_menu_10.jpg';
offImgs['i11'].src = '/img/en/top_menu_11.jpg';
offImgs['i12'].src = '/img/en/top_menu_12.jpg';
offImgs['i13'].src = '/img/en/top_menu_13.jpg';
offImgs['i14'].src = '/img/en/top_menu_14.jpg';
offImgs['i15'].src = '/img/en/top_menu_15.jpg';

function imgOff(imgName){
  if (document.images){
    document.images[imgName].style.cursor = 'pointer';
    document.images[imgName].src = offImgs[imgName].src;
  }
}