jQuery(document).ready(function(){
    var currentDate = new Date();
    jQuery('.newmarkList').each(function(){
        var pass       // passage time
             = 24;
        var content    // display content
             = '<span class="newmark">NEW</span>';
        var newmarkAttr = jQuery(this).text();
        var time = newmarkAttr.split(".");
        var entryDate = new Date(time[0], time[1]-1, time[2], '00', '00', '00');
        var now = (currentDate.getTime() - entryDate.getTime())/(60*60*1000); 
        now = Math.ceil(now);
        if(now <= pass){
            jQuery(this).append(content);
        }
    });
});