function Prepare(strImageName, strUrl)
{
	document.images[strImageName] = new Image();
	document.images[strImageName].src = strUrl;
}

//呼び出す画像
//Prepare('imgNumber1','chigasaki.jpg');
//Prepare('imgNumber2','hiratsuka.jpg');
//Prepare('imgNumber3','odawara.jpg');
//Prepare('imgNumber4','atami.jpg');

//呼び出す画像
Prepare('imgNumber1','../cgi-bin/top_images/chigasaki.jpg');
Prepare('imgNumber2','../cgi-bin/top_images/hiratsuka.jpg');
Prepare('imgNumber3','../cgi-bin/top_images/odawara.jpg');
Prepare('imgNumber4','../cgi-bin/top_images/atami.jpg');