Event.observe(window, "load", function() {
  var divs = $$('.news_entry');
  var cnt = divs.length;
  if(cnt > 0) {
    var widthSingle = divs[0].getWidth() + 10;
    var widthNew = widthSingle * cnt;
    $('newsstream_content').style.width = widthNew + 'px';
  } else {
    $('newsstream_content').style.width = '380px';
  }
});