//画像のプリロード
var preLoadImagesURL = new Array(
"common/navi_01o.gif",
"common/navi_02o.gif",
"common/navi_03o.gif",
"common/navi_04o.gif",
"common/navi_05o.gif",
"common/head_07o.gif",
"common/head_08o.gif",
"common/head_09o.gif",
"common/head_10o.gif");

var preLoadImages = new Array(preLoadImagesURL.length);
for(i = 0; i < preLoadImages; i++){
    preLoadImages[i] = new Image();
    preLoadImages[i].src = preLoadImagesURL[i];
}