哈,前些天有人问过类似问题!
L@_@K
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title> new document </title>
    <meta name="generator" content="editplus" />
    <meta name="author" content="Gao YiXiang" />
    <meta name="email" content="[email protected]" />
    <meta name="keywords" content="javascript dhtml dom" />
    <meta name="description" content="I love web development." />
</head>
<body>
    <div style="width: 300px; height: 1500px; background-color: blue;">
    </div>
<A onClick="Click_Func(img);return false;"   href="#"> see   demo </A> <br> 
<img   id="img"   src="images2/111.png"   alt=""   style="DISPLAY:   none;   VERTICAL-ALIGN:   middle"> 
<script   language="javascript"   type="text/javascript"> 
function   Click_Func(objID)   //显示一个图片 

        var   obj=objID; 
        if(obj.style.display=="none")       
                obj.style.display="block"; 
        else   
                obj.style.display="none"; 

</script> 
</body>
</html>

解决方案 »

  1.   

    <script   language="javascript"   type="text/javascript"> 
    function   Click_Func(objID)   //显示一个图片 

            var   obj=objID; 
            if(obj.style.display=="none")       
                    obj.style.display="block"; 
            else   
                    obj.style.display="none"; 
    document.body.scrollTop = document.body.scrollHeight - document.body.clientHeight;

    </script>