//<![CDATA[
// passage time
var pass = 168;

// display content
var content = '<img src="http://www.fisherman.co.jp/common/img/i_new.gif" class="i_new" />';

var currentDate = new Date();
var spans = document.getElementsByTagName('span');
for (i = 0; i < spans.length; i++) {
    if(spans[i].getAttribute('class') == 'new' ||
     spans[i].getAttribute('className') == 'new') {
        var now = (spans[i].innerHTML - (Math.ceil(currentDate.getTime()/1000))) /(60*60);
        now = Math.ceil(now);
        if(-now <= pass){
            spans[i].innerHTML = content;
            spans[i].style.display = 'inline';
        }
    }
}
//]]>