javascript实现走马灯效果[无缝连接、循环滚动、无空白maquee]

以下代码在IE6、Firefox+Win2k环境下测试通过

一、向上的无缝循环滚动


程序代码： [ 复制代码到剪贴板 ]


<!-- 指向链接图片的URL -->
<base href="http://www.it365cn.com">
<div align="center" id="demo" style="overflow:hidden;height:200px;width:95px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
    <div id="demo1">
        <!-- 定义内容-->
        <img src="images/logo_1.gif">
        <img src="images/logo/flashempire.gif">
        <img src="images/logo.gif">
        <img src="images/logo/5dmedia.gif">
        <img src="images/logo/macromedia.gif">
        <img src="images/logo/sucaiw.gif">
        <img src="images/logo/blueieda.gif">
        <img src="images/logo/htmlcn.gif">
        <img src="images/logo/fwcn.gif">
    </div>
    <div id="demo2"></div>
</div>

<script language="javascript" type="text/javascript">
<!--
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed=10;    //滚动速度值，值越大速度越慢
demo2.innerHTML = demo1.innerHTML    //克隆demo2为demo1
function Marquee(){
    if(demo2.offsetTop-demo.scrollTop<=0)    //当滚动至demo1与demo2交界时
        demo.scrollTop-=demo1.offsetHeight    //demo跳到最顶端
    else{
        demo.scrollTop++
    }
}
var MyMar = setInterval(Marquee,speed);        //设置定时器
demo.onmouseover = function(){clearInterval(MyMar)}    //鼠标经过时清除定时器达到滚动停止的目的
demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)}    //鼠标移开时重设定时器
-->
</script>


二、向下的无缝循环滚动

程序代码： [ 复制代码到剪贴板 ]
<!-- 指向链接图片的URL -->
<base href="http://www.it365cn.com">
<div align="center" id="demo" style="overflow:hidden;height:200px;width:95px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
    <div id="demo1">
        <!-- 定义内容-->
        <img src="images/logo_1.gif">
        <img src="images/logo/flashempire.gif">
        <img src="images/logo.gif">
        <img src="images/logo/5dmedia.gif">
        <img src="images/logo/macromedia.gif">
        <img src="images/logo/sucaiw.gif">
        <img src="images/logo/blueieda.gif">
        <img src="images/logo/htmlcn.gif">
        <img src="images/logo/fwcn.gif">
    </div>
    <div id="demo2"></div>
</div>

<script language="javascript" type="text/javascript">
<!--
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed=10;    //数值越大滚动速度越慢
demo2.innerHTML = demo1.innerHTML;
demo.scrollTop = demo.scrollHeight;
function Marquee(){
    if(demo1.offsetTop-demo.scrollTop>=0)
        demo.scrollTop+=demo2.offsetHeight
    else{
        demo.scrollTop--
    }
}
var MyMar = setInterval(Marquee,speed);
demo.onmouseover = function(){clearInterval(MyMar)}
demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)}
-->
</script>


三、向左的无缝循环滚动

程序代码： [ 复制代码到剪贴板 ]
<!-- 指向链接图片的URL -->
<base href="http://www.it365cn.com">
<div align="center" id="demo" style="overflow:hidden;height:33px;width:500px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
<table border="0" cellspacing="0" cellpadding="0">
    <tr>
      <td id="demo1"><img src="images/logo_1.gif"><img src="images/logo/flashempire.gif"><img src="images/logo.gif"><img src="images/logo/5dmedia.gif"><img src="images/logo/macromedia.gif"><img src="images/logo/sucaiw.gif"><img src="images/logo/blueieda.gif"><img src="images/logo/htmlcn.gif" border="0"></td>
      <td id="demo2">&nbsp;</td>
    </tr>
</table>
</div>

<script language="javascript" type="text/javascript">
<!--
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed=10;    //数值越大滚动速度越慢
demo2.innerHTML = demo1.innerHTML
function Marquee(){
    if(demo2.offsetWidth-demo.scrollLeft<=0)
        demo.scrollLeft-=demo1.offsetWidth
    else{
        demo.scrollLeft++
    }
}
var MyMar = setInterval(Marquee,speed);
demo.onmouseover = function(){clearInterval(MyMar)}
demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)}
-->
</script>


四、向右的无缝循环滚动

程序代码： [ 复制代码到剪贴板 ]
<!-- 指向链接图片的URL -->
<base href="http://www.it365cn.com">
<div align="center" id="demo" style="overflow:hidden;height:33px;width:500px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
<table border="0" cellspacing="0" cellpadding="0">
    <tr>
      <td id="demo1"><img src="images/logo_1.gif"><img src="images/logo/flashempire.gif"><img src="images/logo.gif"><img src="images/logo/5dmedia.gif"><img src="images/logo/macromedia.gif"><img src="images/logo/sucaiw.gif"><img src="images/logo/blueieda.gif"><img src="images/logo/htmlcn.gif" border="0"></td>
      <td id="demo2">&nbsp;</td>
    </tr>
</table>
</div>

<script language="javascript" type="text/javascript">
<!--
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed=10;    //数值越大滚动速度越慢
demo2.innerHTML = demo1.innerHTML;
demo.scrollLeft = demo.scrollWidth;
function Marquee(){
    if(demo.scrollLeft<=0)
        demo.scrollLeft+=demo2.offsetWidth
    else{
        demo.scrollLeft--
    }
}
var MyMar = setInterval(Marquee,speed)
demo.onmouseover = function(){clearInterval(MyMar)}
demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)}
-->
</script>

来源：http://thomaslee007.javaeye.com/blog/204708

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

上下綜合實例

<a href="#" onmouseover="addspeed=10" onmouseout="addspeed=dafault_addspeed" >^^^^^^^^^^^^^^^^^^^^^^^^</a>
<div id=demo style="overflow:hidden;height:421px;width:190px;">
<div id="demo1">
   <table width="100%" border="0" cellspacing="0" cellpadding="0">
   <tr>
    <td height="421" align="center">
    <table width="95%" border="0" cellspacing="7" cellpadding="0">
    <tr>
     <td align="center"><a href="main.php?action=introduce_view&id=1"><img src="http://qz/upload/2008/12/20081216101239_small.jpg" width="180" height="73" border="0" /></a></td>
    </tr>
    <tr>
     <td align="center"><a href="main.php?action=introduce_view&id=2"><img src="http://qz/upload/2008/12/20081216101251_small.jpg" width="180" height="73" border="0" /></a></td>
    </tr>
    <tr>
     <td align="center"><a href="main.php?action=introduce_view&id=1"><img src="http://qz/upload/2008/12/20081216101239_small.jpg" width="180" height="73" border="0" /></a></td>
    </tr>
    <tr>
     <td align="center"><a href="main.php?action=introduce_view&id=2"><img src="http://qz/upload/2008/12/20081216101251_small.jpg" width="180" height="73" border="0" /></a></td>
    </tr>
   </table></td>
   </tr>
   </table>
</div>
   <div id="demo2"></div>
</div>
<a href="#" onmouseover="clearInterval(MyMar);MyMar=setInterval(rightAddSpeed,speed)" onmouseout="clearInterval(MyMar);MyMar=setInterval(Marquee,speed)" >ⅤⅤⅤⅤⅤⅤⅤⅤⅤⅤⅤⅤ</a>
<script>

var speed=1 ;
var addspeed=1;
var dafault_addspeed=1;
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");

demo2.innerHTML=demo1.innerHTML ;
function Marquee(){
if(demo2.offsetHeight-demo.scrollTop<=0)
   demo.scrollTop-=demo1.offsetHeight;
else{
   demo.scrollTop=demo.scrollTop+addspeed;
}
}
function rightAddSpeed(){
if(demo1.offsetTop-demo.scrollTop>=0)
        demo.scrollTop+=demo2.offsetHeight
    else{
        demo.scrollTop-=10;
    }
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}

</script>



=================================================

+++++++++++++++左右綜合实例++++++++++++++

<table width="1002" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
    <td height="153" valign="top" background="images/pro_centerbg2.jpg"><table width="1002" height="140" border="0" cellpadding="0" cellspacing="0">
      <tr>
        <td width="106" align="center" valign="top"><img src="images/jiantou_left.jpg" width="60" height="88" onmouseover="addspeed=10" onmouseout="addspeed=dafault_addspeed"/></td>
        <td width="790" valign="top">
   <!----------------------------小圖展示區------------------------------------>
   <div id=demo style="overflow:hidden;height:100px;width:790px;">
   <table>
    <tr>
     <td id="demo1" valign="top">
      <table width="790" height="140" border="0" cellpadding="0" cellspacing="0">
       <tr>
       <td width="131" align="center" valign="top" >
        <DIV class="example" style="width:130px; ">
        <!--[if lte IE 6.5]><v:rect filled="f"><v:fill size="0pt,0pt"></v:fill><![endif]-->
        <DIV class="bd" style="width:110px; height:74px;">
         <img src="images/protest1.jpg" width="110" height="74" /></DIV>
        <!--[if lte IE 6.5]></v:rect><![endif]-->
        </DIV>
       </td>
       <td width="131" align="center" valign="top" >
        <DIV class="example" style="width:130px; ">
        <!--[if lte IE 6.5]><v:rect filled="f"><v:fill size="0pt,0pt"></v:fill><![endif]-->
        <DIV class="bd" style="width:110px; height:74px;">
         <img src="images/protest2.jpg" width="110" height="74" /></DIV>
        <!--[if lte IE 6.5]></v:rect><![endif]-->
        </DIV>  
       </td>
       <td width="131" align="center" valign="top">
        <DIV class="example" style="width:130px; ">
        <!--[if lte IE 6.5]><v:rect filled="f"><v:fill size="0pt,0pt"></v:fill><![endif]-->
        <DIV class="bd" style="width:110px; height:74px;">
         <img src="images/protest3.jpg" width="110" height="74" /></DIV>
        <!--[if lte IE 6.5]></v:rect><![endif]-->
        </DIV>  
       </td>
       <td width="131" align="center" valign="top">
        <DIV class="example" style="width:130px; ">
        <!--[if lte IE 6.5]><v:rect filled="f"><v:fill size="0pt,0pt"></v:fill><![endif]-->
        <DIV class="bd" style="width:110px; height:74px;">
         <img src="images/protest4.jpg" width="110" height="74" /></DIV>
        <!--[if lte IE 6.5]></v:rect><![endif]-->
        </DIV>  
       </td>
       <td width="131" align="center" valign="top">
        <DIV class="example" style="width:130px; ">
        <!--[if lte IE 6.5]><v:rect filled="f"><v:fill size="0pt,0pt"></v:fill><![endif]-->
        <DIV class="bd" style="width:110px; height:74px;">
         <img src="images/protest5.jpg" width="110" height="74" /></DIV>
        <!--[if lte IE 6.5]></v:rect><![endif]-->
        </DIV>  
       </td>
       <td width="135" align="center" valign="top">
        <DIV class="example" style="width:130px; ">
        <!--[if lte IE 6.5]><v:rect filled="f"><v:fill size="0pt,0pt"></v:fill><![endif]-->
        <DIV class="bd" style="width:110px; height:74px;">
         <img src="images/protest6.jpg" width="110" height="74" /></DIV>
        <!--[if lte IE 6.5]></v:rect><![endif]-->
        </DIV>  
       </td>
       <td width="135" align="center" valign="top">
        <DIV class="example" style="width:130px; ">
        <!--[if lte IE 6.5]><v:rect filled="f"><v:fill size="0pt,0pt"></v:fill><![endif]-->
        <DIV class="bd" style="width:110px; height:74px;">
         <img src="images/protest6.jpg" width="110" height="74" /></DIV>
        <!--[if lte IE 6.5]></v:rect><![endif]-->
        </DIV>  
       </td>
       </tr>
      </table>
     </td>
     <td valign="top" id="demo2"></td>
    </tr>
   </table>
   </div>
 
   <!----------------------------小圖展示區end------------------------------------>
   </td>
        <td width="106" align="center" valign="top"><img src="images/jiantou_right.jpg" width="60" height="88" onmouseover="clearInterval(MyMar);MyMar=setInterval(rightAddSpeed,speed)" onmouseout="clearInterval(MyMar);MyMar=setInterval(Marquee,speed)"/></td>
      </tr>
    </table></td>
</tr>
</table>
<script>
var speed=1
var addspeed=1;
var dafault_addspeed=1;
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
demo2.innerHTML=demo1.innerHTML
function Marquee(){
if(demo2.offsetWidth-demo.scrollLeft<=0)
   demo.scrollLeft-=demo1.offsetWidth
else{
   demo.scrollLeft=demo.scrollLeft+addspeed
}
}
function rightAddSpeed(){
if(demo2.offsetWidth-demo.scrollLeft>0)
   demo.scrollLeft+=demo1.offsetWidth
else{
   demo.scrollLeft=demo.scrollLeft-10
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
</script>