NewsScroller=function(id,speed){var self=this;var container=document.getElementById(id);var boxheight=container.style.height.replace('px','');var heighttmp=container.scrollHeight;var height=parseInt(container.scrollHeight);var _timer;container.innerHTML=container.innerHTML+container.innerHTML;this.scrollSpeed=(parseInt(speed)>0)?speed:30;this.doScroll=function(){if(container.scrollTop>height){container.scrollTop=1;}else{container.scrollTop=container.scrollTop+1;}};this.start=function(){_timer=window.setInterval(self.doScroll,this.scrollSpeed);};this.stop=function(){if(_timer)window.clearInterval(_timer);};this.start();};