继续请教-setInterval

利用window.setInterval("loadpic()",1000)使图片自动切换,一共四张图.但没效果.并不切换.错在哪里?谢谢function loadpic()
{
var pic=document.getElementById("im");
pic.src="tpxw/"+pic_path_array[pic_count];
pic.width="165";
pic.height="143";
var tb=document.getElementById("contain");
tb.rows[2][0].innerText=pic_title_array[pic_count];
pic_count=pic_count+1;
if (pic_count==4)
   {
     pic_count=0;
   }
}

解决方案 »

  1.   

    alert(pic.src)，查看路径是不是对的
      

  2.   

    <body>
    <img id="im" border=1><table border="1" width="37%" id="contain">
    <tr>
    <td width="274">　</td>
    <td>　</td>
    </tr>
    <tr>
    <td width="274">　</td>
    <td>　</td>
    </tr>
    <tr>
    <td width="274">　</td>
    <td>　</td>
    </tr>
    </table>
    <script language="javascript">
    <!--
    var pic_path_array=[
    'http://tucoo.com/icon/Yazoo%20smilies/s/Cool.png',
    'http://tucoo.com/icon/Yazoo%20smilies/s/Huh!.png',
    'http://tucoo.com/icon/Yazoo%20smilies/s/Love.png',
    'http://tucoo.com/icon/Yazoo%20smilies/s/Tongue.png']
    var pic_title_array =['Cool','Huh!','Love','Tongue']
    var pic_count=0;
    function loadpic() {
    var pic=document.getElementById("im"); 
    pic.src=""+pic_path_array[pic_count]; 
    pic.width="128"; 
    pic.height="128"; 
    var tb=document.getElementById("contain"); 
    tb.rows[2].cells[0].innerText=pic_title_array[pic_count]; 
    pic_count=pic_count+1; 
    if (pic_count>=4)   {     pic_count=0;   } 
    }
    window.setInterval("loadpic()",3000)
    //-->
    </script></body>