if (document.images) {
var navi_1 = new Image()
navi_1.src = "/common/images/navi_top.gif"
var navi_1_2 = new Image()
navi_1_2.src = "/common/images/navi_top_b.gif"

var navi_2 = new Image()
navi_2.src = "/common/images/navi_products.gif"
var navi_2_2 = new Image()
navi_2_2.src = "/common/images/navi_products_b.gif"

var navi_3 = new Image()
navi_3.src = "/common/images/navi_support.gif"
var navi_3_2 = new Image()
navi_3_2.src = "/common/images/navi_support_b.gif"

var navi_4 = new Image()
navi_4.src = "/common/images/navi_corp.gif"
var navi_4_2 = new Image()
navi_4_2.src = "/common/images/navi_corp_b.gif"

var navi_5 = new Image()
navi_5.src = "/common/images/navi_ir.gif"
var navi_5_2 = new Image()
navi_5_2.src = "/common/images/navi_ir_b.gif"

var navi_6 = new Image()
navi_6.src = "/common/images/navi_press.gif"
var navi_6_2 = new Image()
navi_6_2.src = "/common/images/navi_press_b.gif"

var navi_7 = new Image()
navi_7.src = "/common/images/navi_show.gif"
var navi_7_2 = new Image()
navi_7_2.src = "/common/images/navi_show_b.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')
}

function showLAYER1(helpNO,clearNO,subclearNO){
	if(document.layers)document.layers['help'+helpNO].visibility='show' 
	if(document.layers)document.layers['clear'+clearNO].visibility='show' 
	if(document.layers)document.layers['subclear'+subclearNO].visibility='show' 
	if(document.all)document.all('help'+helpNO).style.visibility='visible'
	if(document.all)document.all('clear'+clearNO).style.visibility='visible'
	if(document.all)document.all('subclear'+subclearNO).style.visibility='visible'
	if(document.getElementById)document.getElementById('help'+helpNO).style.visibility='visible'
	if(document.getElementById)document.getElementById('clear'+clearNO).style.visibility='visible'
	if(document.getElementById)document.getElementById('subclear'+subclearNO).style.visibility='visible'

}

function hideLAYER(layName){
	if(document.layers)document.layers[layName].visibility='hide' 
	if(document.all)document.all(layName).style.visibility='hidden'
	if(document.getElementById)document.getElementById(layName).style.visibility='hidden'
}

function hideALL(){
hideLAYER('help0');
hideLAYER('help1');
hideLAYER('help2');
hideLAYER('clear0');
hideLAYER('subclear0');
}