var onImgs = new Array();
onImgs['home'] = new Image();
onImgs['history'] = new Image();
onImgs['mission'] = new Image();
onImgs['newcars'] = new Image();
onImgs['usedcars'] = new Image();
onImgs['service'] = new Image();
onImgs['parts'] = new Image();
onImgs['contact'] = new Image();
onImgs['home'].src = '/img/en/menu_top_01_on.gif';
onImgs['history'].src = '/img/en/menu_top_02_on.gif';
onImgs['mission'].src = '/img/en/menu_top_03_on.gif';
onImgs['newcars'].src = '/img/en/menu_top_04_on.gif';
onImgs['usedcars'].src = '/img/en/menu_top_05_on.gif';
onImgs['service'].src = '/img/en/menu_top_06_on.gif';
onImgs['parts'].src = '/img/en/menu_top_07_on.gif';
onImgs['contact'].src = '/img/en/menu_top_08_on.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['home'] = new Image();
offImgs['history'] = new Image();
offImgs['mission'] = new Image();
offImgs['newcars'] = new Image();
offImgs['usedcars'] = new Image();
offImgs['service'] = new Image();
offImgs['parts'] = new Image();
offImgs['contact'] = new Image();
offImgs['home'].src = '/img/en/menu_top_01.gif';
offImgs['history'].src = '/img/en/menu_top_02.gif';
offImgs['mission'].src = '/img/en/menu_top_03.gif';
offImgs['newcars'].src = '/img/en/menu_top_04.gif';
offImgs['usedcars'].src = '/img/en/menu_top_05.gif';
offImgs['service'].src = '/img/en/menu_top_06.gif';
offImgs['parts'].src = '/img/en/menu_top_07.gif';
offImgs['contact'].src = '/img/en/menu_top_08.gif';

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