//CacheImage
if(document.images) {
	
	naviOn = new Array();
	naviOver = new Array();
	naviOff = new Array();
	
	
	//ID-CLUB
	naviOn[1] = new Image();
	naviOn[1].src = "/id_club/img/btn_id_club_on.jpg";
	
	naviOver[1] = new Image();
	naviOver[1].src = "/id_club/img/btn_id_club_over.jpg";
	
	naviOff[1] = new Image();
	naviOff[1].src = "/id_club/img/btn_id_club_off.jpg";
	
	//fusso
	naviOn[2] = new Image();
	naviOn[2].src = "/id_club/img/btn_fusso_on.jpg";
	
	naviOver[2] = new Image();
	naviOver[2].src = "/id_club/img/btn_fusso_over.jpg";
	
	naviOff[2] = new Image();
	naviOff[2].src = "/id_club/img/btn_fusso_off.jpg";
	
	//diagnosis
	naviOn[3] = new Image();
	naviOn[3].src = "/id_club/img/btn_diagnosis_on.jpg";
	
	naviOver[3] = new Image();
	naviOver[3].src = "/id_club/img/btn_diagnosis_over.jpg";
	
	naviOff[3] = new Image();
	naviOff[3].src = "/id_club/img/btn_diagnosis_off.jpg";
	
	//shokuiku
	naviOn[4] = new Image();
	naviOn[4].src = "/id_club/img/btn_shokuiku_on.jpg";
	
	naviOver[4] = new Image();
	naviOver[4].src = "/id_club/img/btn_shokuiku_over.jpg";
	
	naviOff[4] = new Image();
	naviOff[4].src = "/id_club/img/btn_shokuiku_off.jpg";
	
	//faq
	naviOn[5] = new Image();
	naviOn[5].src = "/id_club/img/btn_faq_on.jpg";
	
	naviOver[5] = new Image();
	naviOver[5].src = "/id_club/img/btn_faq_over.jpg";
	
	naviOff[5] = new Image();
	naviOff[5].src = "/id_club/img/btn_faq_off.jpg";
	
	//link
	naviOn[6] = new Image();
	naviOn[6].src = "/id_club/img/btn_link_on.jpg";
	
	naviOver[6] = new Image();
	naviOver[6].src = "/id_club/img/btn_link_over.jpg";
	
	naviOff[6] = new Image();
	naviOff[6].src = "/id_club/img/btn_link_off.jpg";
	
	//profile
	naviOn[7] = new Image();
	naviOn[7].src = "/id_club/img/btn_profile_on.jpg";
	
	naviOver[7] = new Image();
	naviOver[7].src = "/id_club/img/btn_profile_over.jpg";
	
	naviOff[7] = new Image();
	naviOff[7].src = "/id_club/img/btn_profile_off.jpg";
		
	//member
	naviOn[8] = new Image();
	naviOn[8].src = "/id_club/img/btn_member_on.jpg";
	
	naviOver[8] = new Image();
	naviOver[8].src = "/id_club/img/btn_member_over.jpg";
	
	naviOff[8] = new Image();
	naviOff[8].src = "/id_club/img/btn_member_off.jpg";
	
}

//changeImage
function imgChange(imgName,imgState,imgNum) {
	if(document.images) {
		if(document[imgName].src.indexOf("_on") <= 0){
			document[imgName].src = eval(imgState)[imgNum].src;
		}
	}
}