var naviOffImg=new Array(9);
var naviOnImg=new Array(9);
for(h=1; h<=8; h++){
	naviOffImg[h]=new Image();
	naviOffImg[h].src="img/navi"+h+".gif";
	naviOnImg[h]=new Image();
	naviOnImg[h].src="img/navi"+h+"_r.gif";
}
function naviAct(areaNum,sitNum){
	if(sitNum==0){
		document.images['navi'+areaNum].src=naviOffImg[areaNum].src;
	}else{
		document.images['navi'+areaNum].src=naviOnImg[areaNum].src;	
	}
}