//ナビゲーション
imgdata_navi=new Array("menu_img/outline","menu_img/guide","menu_img/apply","menu_img/course","menu_img/access","menu_img/contact","menu_img/tourism","menu_img/top","menu_img/traffic","menu_img/densya","menu_img/drama","menu_img/videonews","menu_img/webphoto","menu_img/result")

imgdata_navi_off=new Array()
imgdata_navi_on=new Array()
for(i=0; i<imgdata_navi.length; i++){
imgdata_navi_off[i]=imgdata_navi[i] + ".gif"
imgdata_navi_on[i]=imgdata_navi[i] + "_on.gif"
}

var objname_navi=new Array()

for(i=0; i<imgdata_navi.length; i++){
objname_navi[i]=new Image()
objname_navi[i].src=imgdata_navi[i] + "_on.gif"
}

function roll(imgnum,imgname){
document.images[imgnum].src=imgname
}