var onImgs = new Array();
onImgs['btnnew'] = new Image();
onImgs['btnused'] = new Image();
onImgs['btnpromos'] = new Image();
onImgs['btnrequests'] = new Image();
onImgs['btnservice'] = new Image();
onImgs['btncontact'] = new Image();

onImgs['btncar'] = new Image();
onImgs['btnhybrid'] = new Image();
onImgs['btntruck'] = new Image();

onImgs['btnnew'].src = 'http://www.houletoyota.com/img/en/menu_gauche_01_on.gif';
onImgs['btnused'].src = 'http://www.houletoyota.com/img/en/menu_gauche_02_on.gif';
onImgs['btnpromos'].src = 'http://www.houletoyota.com/img/en/menu_gauche_03_on.gif';
onImgs['btnrequests'].src = 'http://www.houletoyota.com/img/en/menu_gauche_04_on.gif';
onImgs['btnservice'].src = 'http://www.houletoyota.com/img/en/menu_gauche_05_on.gif';
onImgs['btncontact'].src = 'http://www.houletoyota.com/img/en/menu_gauche_06_on.gif';

onImgs['btncar'].src = 'http://www.houletoyota.com/img/en/menu_gauche_08_on.gif';
onImgs['btnhybrid'].src = 'http://www.houletoyota.com/img/en/menu_gauche_09_on.gif';
onImgs['btntruck'].src = 'http://www.houletoyota.com/img/en/menu_gauche_10_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['btnnew'] = new Image();
offImgs['btnused'] = new Image();
offImgs['btnpromos'] = new Image();
offImgs['btnrequests'] = new Image();
offImgs['btnservice'] = new Image();
offImgs['btncontact'] = new Image();

offImgs['btncar'] = new Image();
offImgs['btnhybrid'] = new Image();
offImgs['btntruck'] = new Image();

offImgs['btnnew'].src = 'http://www.houletoyota.com/img/en/menu_gauche_01_off.gif';
offImgs['btnused'].src = 'http://www.houletoyota.com/img/en/menu_gauche_02_off.gif';
offImgs['btnpromos'].src = 'http://www.houletoyota.com/img/en/menu_gauche_03_off.gif';
offImgs['btnrequests'].src = 'http://www.houletoyota.com/img/en/menu_gauche_04_off.gif';
offImgs['btnservice'].src = 'http://www.houletoyota.com/img/en/menu_gauche_05_off.gif';
offImgs['btncontact'].src = 'http://www.houletoyota.com/img/en/menu_gauche_06_off.gif';

offImgs['btncar'].src = 'http://www.houletoyota.com/img/en/menu_gauche_08_off.gif';
offImgs['btnhybrid'].src = 'http://www.houletoyota.com/img/en/menu_gauche_09_off.gif';
offImgs['btntruck'].src = 'http://www.houletoyota.com/img/en/menu_gauche_10_off.gif';

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