var onImgs = new Array();
onImgs['i1'] = new Image();
onImgs['i2'] = new Image();
onImgs['i3'] = new Image();
onImgs['i4'] = new Image();
onImgs['i5'] = new Image();
onImgs['i6'] = new Image();
onImgs['i7'] = new Image();
onImgs['i8'] = new Image();
onImgs['i9'] = new Image();
onImgs['i10'] = new Image();
onImgs['i11'] = new Image();
onImgs['i1'].src = '/img/en/nav_top2_on.jpg';
onImgs['i2'].src = '/img/en/nav_top3_on.jpg';
onImgs['i3'].src = '/img/en/nav_top4_on.jpg';
onImgs['i4'].src = '/img/en/nav_top5_on.jpg';
onImgs['i5'].src = '/img/en/nav_top6_on.jpg';
onImgs['i6'].src = '/img/en/nav_top7_on.jpg';
onImgs['i7'].src = '/img/en/nav_top8_on.jpg';
onImgs['i8'].src = '/img/en/nav_top9_on.jpg';
onImgs['i9'].src = '/img/en/nav_top10_on.jpg';
onImgs['i10'].src = '/img/en/nav_top11_on.jpg';
onImgs['i11'].src = '/img/en/nav_top12_on.jpg';

onImgs['s1'] = new Image();
onImgs['s2'] = new Image();
onImgs['s3'] = new Image();
onImgs['s4'] = new Image();
onImgs['s5'] = new Image();
onImgs['s1'].src = '/img/en/nav_top13_on.jpg';
onImgs['s2'].src = '/img/en/nav_top14_on.jpg';
onImgs['s3'].src = '/img/en/nav_top15_on.jpg';
onImgs['s4'].src = '/img/en/nav_top16_on.jpg';
onImgs['s5'].src = '/img/en/nav_top17_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['i1'] = new Image();
offImgs['i2'] = new Image();
offImgs['i3'] = new Image();
offImgs['i4'] = new Image();
offImgs['i5'] = new Image();
offImgs['i6'] = new Image();
offImgs['i7'] = new Image();
offImgs['i8'] = new Image();
offImgs['i9'] = new Image();
offImgs['i10'] = new Image();
offImgs['i11'] = new Image();
offImgs['i1'].src = '/img/en/nav_top2_off.jpg';
offImgs['i2'].src = '/img/en/nav_top3_off.jpg';
offImgs['i3'].src = '/img/en/nav_top4_off.jpg';
offImgs['i4'].src = '/img/en/nav_top5_off.jpg';
offImgs['i5'].src = '/img/en/nav_top6_off.jpg';
offImgs['i6'].src = '/img/en/nav_top7_off.jpg';
offImgs['i7'].src = '/img/en/nav_top8_off.jpg';
offImgs['i8'].src = '/img/en/nav_top9_off.jpg';
offImgs['i9'].src = '/img/en/nav_top10_off.jpg';
offImgs['i10'].src = '/img/en/nav_top11_off.jpg';
offImgs['i11'].src = '/img/en/nav_top12_off.jpg';

offImgs['s1'] = new Image();
offImgs['s2'] = new Image();
offImgs['s3'] = new Image();
offImgs['s4'] = new Image();
offImgs['s5'] = new Image();
offImgs['s1'].src = '/img/en/nav_top13_off.jpg';
offImgs['s2'].src = '/img/en/nav_top14_off.jpg';
offImgs['s3'].src = '/img/en/nav_top15_off.jpg';
offImgs['s4'].src = '/img/en/nav_top16_off.jpg';
offImgs['s5'].src = '/img/en/nav_top17_off.jpg';

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