帮忙见见这段js，文字的移动速度时快时慢，图片也是

帮忙看看这段js，文字的移动速度时快时慢，图片也是
文字移动和图片移动在同一个页面
文字移动：

HTML code

<div id="demoabc" style="overflow:hidden;width:720px;height:18px; padding-bottom:2px; line-height:18px;  white-space:nowrap;">        <div id="demoabc1">        <%=gonggaoinfo%>        </div>        <div id="demoabc2"></div>    </div>

JScript code

<script type="text/javascript">       var demoabc2 = document.getElementById("demoabc2");    var demoabc1 = document.getElementById("demoabc1");    var demoabc = document.getElementById("demoabc");    function MarqueeLeft() {        if (demoabc2.offsetWidth - demoabc.scrollLeft  <= 0)            demoabc.scrollLeft -= demoabc1.offsetWidth        else {            demoabc.scrollLeft++        }    }    var MyMar1 = setInterval(MarqueeLeft, 20);</script>

HTML code

<div class="top43" id="demo" style="overflow:hidden; width:930px; height: 170px"><table cellspacing="0" cellpadding="0" align="left" border="0"><tbody><tr><td id="demo1" style="width: 198px"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><asp:Repeater ID="rptgd" runat="server" >         <ItemTemplate>         <td>           <div class="top44">            <div class="top45">             <div class="top46">             <a href='cp3.aspx?id=<%#Eval("id") %>'>            <img alt="" src='<%#Eval("entiroImagePath")%>' width="182" height="125" />            </a>                                      </div>            </div>            <div class="top47"><a href='cp3.aspx?id=<%#Eval("id") %>'><%#Eval("entiroImageName")%></a></div>           </div>                             </td>                     </ItemTemplate>           </asp:Repeater>           <%--循环显示 END--%></tr></tbody>       </table></td><td id="demo2" valign="top"></td></tr></tbody></table></div>

JScript code

<script type="text/javascript">    var dir = 1//每步移动像素，数大为快    var speed = 20//循环周期（毫秒）数大为慢    demo2.innerHTML = demo1.innerHTML    function Marquee() {//正常移动        //alert(demo2.offsetWidth+"\n"+demo.scrollLeft)        if (dir > 0 && (demo2.offsetWidth - demo.scrollLeft) <= 0) demo.scrollLeft = 0        if (dir < 0 && (demo.scrollLeft <= 0)) demo.scrollLeft = demo2.offsetWidth        demo.scrollLeft += dir        demo.onmouseover = function () { clearInterval(MyMar) } //暂停移动        demo.onmouseout = function () { MyMar = setInterval(Marquee, speed) } //继续移动    }    function r_left() { if (dir = -1) dir = 1 } //换向左移    function r_right() { if (dir = 1) dir = -1 } //换向右移    var MyMar = setInterval(Marquee, speed)</script>

demo2.innerHTML = demo1.innerHTML
function Marquee() {//正常移动
//alert(demo2.offsetWidth+"\n"+demo.scrollLeft)
if (dir > 0 && (demo2.offsetWidth - demo.scrollLeft) <= 0) demo.scrollLeft = 0
if (dir < 0 && (demo.scrollLeft <= 0)) demo.scrollLeft = demo2.offsetWidth
demo.scrollLeft += dir

}
function r_left() { if (dir = -1) dir = 1 } //换向左移
function r_right() { if (dir = 1) dir = -1 } //换向右移
var MyMar = setInterval(Marquee, speed)
 demo.onmouseover = function () { clearInterval(MyMar) } //暂停移动
demo.onmouseout = function () { MyMar = setInterval(Marquee, speed) } //继续移动
</script>

是不是这样会好点