(function(){
	// アップする先のベースURL
	var base_url = "http://www.k-togashi.co.jp/";
	// var base_url = "http://demo-jp.com/togashi/";

	var html_path = "looking/",     // リンク先HTMLのベースパス
		img_path = "img/houseimg/"; // 表示する画像のベースパス

	// 画像の表示をするタグのID
	var targetID = "houseimg";

	// 画像配列
	var items = [
		{ url: "osumai02.html", img: "house02.jpg", alt: "施工事例(仙台市青葉区07A様宅)" },
		{ url: "osumai03.html", img: "house03.jpg", alt: "施工事例(仙台市宮城野区06A様宅)" },
		{ url: "osumai04.html", img: "house04.jpg", alt: "施工事例(仙台市泉区07B様宅)" },
		{ url: "osumai05.html", img: "house05.jpg", alt: "施工事例(仙台市太白区07C様宅)" },
		{ url: "osumai06.html", img: "house06.jpg", alt: "施工事例(利府町07D様宅)" },
		{ url: "sumai07.html",  img: "house07.jpg", alt: "施工事例(大崎市07E様宅)" },
		{ url: "osumai08.html", img: "house08.jpg", alt: "施工事例(大崎市07F様宅)" },
		{ url: "osumai09.html", img: "house09.jpg", alt: "施工事例(利府町07G様宅)" },
		{ url: "osumai10.html", img: "house10.jpg", alt: "施工事例(仙台市青葉区08A様宅)" },
		{ url: "osumai11.html", img: "house11.jpg", alt: "施工事例(仙台市太白区08B様宅)" },
		{ url: "osumai12.html", img: "house12.jpg", alt: "施工事例(仙台市太白区07H様宅)" },
		{ url: "osumai13.html", img: "house13.jpg", alt: "施工事例(仙台市青葉区07I様宅)" },
		{ url: "osumai14.html", img: "house14.jpg", alt: "施工事例(仙台市泉区07J様宅)" },
		{ url: "osumai15.html", img: "house15.jpg", alt: "施工事例(仙台市宮城野区07K様宅)" },
		{ url: "osumai16.html", img: "house16.jpg", alt: "施工事例(仙台市青葉区08C様宅)" },
		{ url: "osumai17.html", img: "house17.jpg", alt: "施工事例(仙台市泉区08D様宅)" },
		{ url: "osumai18.html", img: "house18.jpg", alt: "施工事例(富谷町08E様宅)" },
		{ url: "osumai19.html", img: "house19.jpg", alt: "施工事例(利府町08F様宅)" },
		{ url: "osumai20.html", img: "house20.jpg", alt: "施工事例(仙台市青葉区08G様宅)" },
		{ url: "osumai21.html", img: "house21.jpg", alt: "施工事例(仙台市青葉区08H様宅)" },
		{ url: "osumai22.html", img: "house22.jpg", alt: "施工事例(仙台市青葉区08I様宅)" },
		{ url: "osumai23.html", img: "house23.jpg", alt: "施工事例(仙台市泉区09A様宅)" },
		{ url: "osumai24.html", img: "house24.jpg", alt: "施工事例(仙台市泉区09B様宅)" },
		{ url: "osumai25.html", img: "house25.jpg", alt: "施工事例(石巻市 09C様宅)" },
		{ url: "osumai26.html", img: "house26.jpg", alt: "施工事例(名取市 10A様宅)" },
		{ url: "osumai27.html", img: "house27.jpg", alt: "施工事例(仙台市太白区 9D様宅)" },
		{ url: "osumai28.html", img: "house28.jpg", alt: "施工事例(仙台市青葉区 9E様宅)" }
	];

	function createUrl(t, path) {
		var url;
		switch(t) {
			case "img":
				url = base_url + img_path;
			break;
			case "html":
				url = base_url + html_path;
			break;
		}
		return url + path;
	}

	function createImg(id) {
		var img = new Image();
		img.alt = items[id].alt;
		img.src = createUrl("img", items[id].img);
		return img;
	}

	function createAnchor(id) {
		var i = createImg(id),
			a = document.createElement("A");
		a.href = createUrl("html", items[id].url);
		a.appendChild(i);
		return a;
	}

	function createParagraph() {
		var id = Math.floor(Math.random() * items.length),
			a = createAnchor(id),
			p = document.createElement("p"),
			box = document.getElementById(targetID);

		p.appendChild(a);
		box.appendChild(p);
	}

	createParagraph();
})();