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['i1'].src = '/img/en/menu_top_03a.gif';
onImgs['i2'].src = '/img/en/menu_top_05a.gif';
onImgs['i3'].src = '/img/en/menu_top_07a.gif';
onImgs['i4'].src = '/img/en/menu_top_09a.gif';
onImgs['i5'].src = '/img/en/menu_top_11a.gif';
onImgs['i6'].src = '/img/en/menu_top_13a.gif';
onImgs['i7'].src = '/img/en/menu_top_15a.gif';

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['i1'].src = '/img/en/menu_top_03.gif';
offImgs['i2'].src = '/img/en/menu_top_05.gif';
offImgs['i3'].src = '/img/en/menu_top_07.gif';
offImgs['i4'].src = '/img/en/menu_top_09.gif';
offImgs['i5'].src = '/img/en/menu_top_11.gif';
offImgs['i6'].src = '/img/en/menu_top_13.gif';
offImgs['i7'].src = '/img/en/menu_top_15.gif';

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