if (document.images) {
var navi_top = new Image()
navi_top.src = "common_images/navi_top.gif"
var navi_top_2 = new Image()
navi_top_2.src = "common_images/navi_top_ov.gif"

var navi_salonlist = new Image()
navi_salonlist.src = "common_images/navi_salonlist.gif"
var navi_salonlist_2 = new Image()
navi_salonlist_2.src = "common_images/navi_salonlist_ov.gif"

var navi_pricelist = new Image()
navi_pricelist.src = "common_images/navi_pricelist.gif"
var navi_pricelist_2 = new Image()
navi_pricelist_2.src = "common_images/navi_pricelist_ov.gif"

var navi_gallery = new Image()
navi_gallery.src = "common_images/navi_gallery.gif"
var navi_gallery_2 = new Image()
navi_gallery_2.src = "common_images/navi_gallery_ov.gif"

var navi_campaign = new Image()
navi_campaign.src = "common_images/navi_campaign.gif"
var navi_campaign_2 = new Image()
navi_campaign_2.src = "common_images/navi_campaign_ov.gif"

var navi_school = new Image()
navi_school.src = "common_images/navi_school.gif"
var navi_school_2 = new Image()
navi_school_2.src = "common_images/navi_school_ov.gif"

var navi_beautytopics = new Image()
navi_beautytopics.src = "common_images/navi_beautytopics.gif"
var navi_beautytopics_2 = new Image()
navi_beautytopics_2.src = "common_images/navi_beautytopics_ov.gif"

var navi_publicity = new Image()
navi_publicity.src = "common_images/navi_publicity.gif"
var navi_publicity_2 = new Image()
navi_publicity_2.src = "common_images/navi_publicity_ov.gif"

var navi_english = new Image()
navi_english.src = "common_images/navi_english.gif"
var navi_english_2 = new Image()
navi_english_2.src = "common_images/navi_english_ov.gif"
}

function act(imgName) {
        if (document.images)
        document[imgName].src = eval(imgName + '_2.src')
}

function inact(imgName) {
        if (document.images)
        document[imgName].src = eval(imgName + '.src')
}