if (document.images) {
var navi_1 = new Image()
navi_1.src = ''+path+'common/img/navi_top.gif'
var navi_1_b = new Image()
navi_1_b.src = ''+path+'common/img/navi_top_ov.gif'

var navi_2 = new Image()
navi_2.src = ''+path+'common/img/navi_products.gif'
var navi_2_b = new Image()
navi_2_b.src = ''+path+'common/img/navi_products_ov.gif'

var navi_3 = new Image()
navi_3.src = ''+path+'common/img/navi_company.gif'
var navi_3_b = new Image()
navi_3_b.src = ''+path+'common/img/navi_company_ov.gif'

var navi_4 = new Image()
navi_4.src = ''+path+'common/img/navi_dairiten.gif'
var navi_4_b = new Image()
navi_4_b.src = ''+path+'common/img/navi_dairiten_ov.gif'

var navi_5 = new Image()
navi_5.src = ''+path+'common/img/navi_buy.gif'
var navi_5_b = new Image()
navi_5_b.src = ''+path+'common/img/navi_buy_ov.gif'

var navi_6 = new Image()
navi_6.src = ''+path+'common/img/navi_inqury.gif'
var navi_6_b = new Image()
navi_6_b.src = ''+path+'common/img/navi_inqury_ov.gif'
}

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

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