var msg = "......................" ;var interval = 1//修改此处改变间隔时间，单位为毫秒var seq=0;function top5() {len = msg.length;window.status = msg.substring(0, seq+1);seq++;if ( seq >= len ) {seq = 0;window.status = ';window.setTimeout("top5();", interval );}elsewindow.setTimeout("top5();", interval );}top5();