var limit = 7 * 24 * 60 * 60 * 1000; //7日
google.load("feeds", "1");
function initialize() {
var now = (new Date()).getTime();
var container = document.getElementById("feed");
container.innerHTML = '';
var feedurl = new Array("http://www.seifun.net/news/?feed=rss2&256","RSS2","RSS3"); //RSSのURL
  for (n = 0; n < feedurl.length;n++ ) {
    var feed = new google.feeds.Feed(feedurl[n]);
    feed.setNumEntries(5); //記事を3件表示
    feed.load(function(result) {
      if (!result.error) {
           html ="<dl>"; //タイトル
           for (i = 0; i < result.feed.entries.length; i++) {
  var entry = result.feed.entries[i];
  var entdate = new Date(entry.publishedDate).getTime();
  var newmark = '';

if (now >= entdate && now <= (entdate + limit)) {
	newmark = '<span class="kome">NEW <\/span>';
//「NEWマーク」のタグ
}
 html += "<dt>"+changeDate(entry.publishedDate)+"<\/dt>";
//記事タイトル [日付] 7日以内の記事ならNEWマーク
 html += "<dd><a href='"+entry.link+"'>"+entry.title.substr(0,22)+"<\/a> "+newmark+"<\/dd>"; //概要
             }
 html += "<\/dl>";
container.innerHTML += html;
      }
    });
  }
}
//日付表示変更
function changeDate(str){
  var myDate=new Date(str);
  var YY=myDate.getFullYear();
  var MM=myDate.getMonth()+1;
  if(MM<10){MM="0"+MM;}
  var DD=myDate.getDate();
  if(DD<10){DD="0"+DD;}
  var date=YY+"."+MM+"."+DD;
  return date;
 }  
google.setOnLoadCallback(initialize);