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setinterval 与clearinterval有关问题

日期：2014-05-16　 浏览次数：20468 次

setinterval 与clearinterval问题
这是一个跑马灯程序   我把它用函数封装了下   但是有个问题   它往左和往上滚动的时候   鼠标指向它可以让它停止。但是往右和往下的时候却不能.求教各位高手这是怎么回事?
<html>
<head>
<title> 左右滚动的图片效果   -   51windows.Net </title>
<meta   http-equiv= "Content-Type "   content= "text/html;   charset=gb2312 ">
</head>
<body   bgcolor= "#999999 ">

<table   border= "1 "   width= "760 "   align= "center ">
    <tr>
        <td   width= "215 ">   </td>
        <td   width= "545 ">
<!--   滚动代码   begin   -->
<div   id= "demo "   style= "overflow:hidden;height:120px;width:543px; ">
<table   width= "100% "   cellspacing= "0 ">
<tr>
<td   id= "demo1 ">
<table   cellspacing= "0 "   cellspacing= "2 ">
<tr>
<td> <a   href= "http://www.51windows.net/mypic/sight/page_01.htm "   target= "_blank "> <img   src= "http://www.51windows.net/51wfolder_1/jsimg/TN_Feng016.JPG "   border= "0 "/> </a> </td>
<td> <a   href= "http://www.51windows.net/mypic/sight/page_01.htm "   target= "_blank "> <img   src= "http://www.51windows.net/51wfolder_1/jsimg/TN_Feng017.JPG "   border= "0 "/> </a> </td>
<td> <a   href= "http://www.51windows.net/mypic/sight/page_01.htm "   target= "_blank "> <img   src= "http://www.51windows.net/51wfolder_1/jsimg/TN_Feng018.JPG "   border= "0 "/> </a> </td>
<td> <a   href= "http://www.51windows.net/mypic/sight/page_01.htm "   target= "_blank "> <img   src= "http://www.51windows.net/51wfolder_1/jsimg/TN_Feng019.JPG "   border= "0 "/> </a> </td>
<td> <a   href= "http://www.51windows.net/mypic/sight/page_01.htm "   target= "_blank "> <img   src= "http://www.51windows.net/51wfolder_1/jsimg/TN_Feng020.JPG "   border= "0 "/> </a> </td>
<td> <a   href= "http://www.51windows.net/mypic/sight/page_01.htm "   target= "_blank "> <img   src= "http://www.51windows.net/51wfolder_1/jsimg/TN_Feng021.JPG "   border= "0 "/> </a> </td>
</tr>
</table>
</td>

<td   id= "demo2 "> </td>

</tr>
</table>
</div>
<!--   滚动代码   end   -->
</td>
    </tr>
</table>
<script   language= "JavaScript "   src= "ff.js "/>
</script>
<script   type= "text/javascript ">
scroll1( 'LEFT ', 'demo ', 'demo1 ', 'demo2 ')
</script>
</body>
</html>
-------------------
ff.js
var   d1;
var   d2;
var   d3;
var   d
var   v1Scroll
var   speed=50
demo2.innerHTML=demo1.innerHTML
demo1.onmouseover=function(){clearInterval(v1Scrol

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