function showFeed() {
	var feed = new google.feeds.Feed("http://rss.exblog.jp/rss/exblog/konajikan/index.xml");
	feed.load(
		function(result) {
			if (result.error) {
				return;
			}
			var html = '<h3><img src="/image/school/side_title03.gif" height="29" width="270" alt="先生ブログ 新着記事"></h3>';
			for (var i = 0; i < result.feed.entries.length; i++) {
				var entry = result.feed.entries[i];
				if((getTitle(entry)).indexOf('PR:',0) != -1)continue;
				html+=addFeed(entry);
			}
			html+='<br class="clear"><p class="moreLink"><a href="'+result.feed.link+'" target="blank">&gt;&gt;先生のブログを見る</a></p>';
			$('div.feed').html(html);
		}
	);
}

function addFeed(entry) {
	var image = getImage(entry.content);
	var html = '<div class="blogEntry">';
	html+='<p class="title"><span class="supp">'+getYmd(new Date(entry.publishedDate))+' 更新</span>';
	html+='<em>'+getTitle(entry)+'</em></p>';
	if(image!=null){
		html+='<img src="'+image+'" width="80" alt="" class="leftImg border" />';
	}
	html+='<p>'+getContent(entry)+' <a href="'+entry.link+'" target="_blank" class="supp">&gt;&gt;続きを読む</a></p>';
	html+='</div>';
	return html;
}

function getTitle(entry) {
	return cut(entry.title,15);
}

function getContent(entry) {
	return cut(entry.contentSnippet,25);
}

function cut(str,length) {
	if(str.length<=length){
		return str;
	}
	return str.substring(0,length)+"…";
}

function getImage(content) {
return null;
	var url = /((?:\w+):\/\/(?:[\w.]+)\/(?:[^\t\n\r\f\s"'<>]*))/;
	var image = content.match(url);
	if(image!=null){
		return image[0];
	}
	return null;
}

function getYmd(date) {
	var year = date.getYear();
	if(year<1000) year+=1900;
	return year+"/"+(date.getMonth()+1)+"/"+date.getDate();
}

google.load("feeds", "1");
google.setOnLoadCallback(showFeed);