DataList做无间隔滚动横向

<form >
                                        </TD>
                                    </TR>
                                </TBODY>
                            </TABLE>
                        </DIV>
                        <SCRIPT>
                                        var speed3=25//速度数值越大速度越慢
                                        demo2.innerHTML=demo1.innerHTML
                                        function Marquee(){
                                        if(demo2.offsetWidth-demo.scrollLeft<=0)
                                        demo.scrollLeft-=demo1.offsetWidth
                                        else{
                                        demo.scrollLeft++
                                        }
                                        }
                                        var MyMar=setInterval(Marquee,speed3)
                                        demo.onmouseover=function() {clearInterval(MyMar)}
                                        demo.onmouseout=function() {MyMar=setInterval(Marquee,speed3)}
                        </SCRIPT>
                    </TD>
                </TR>
            </TABLE>
            </TD></TR></TABLE>
        </form>

DataList做无间隔滚动横向