所以我建立了这个网页，左侧有一个照片库。理想情况下，将鼠标悬停在它上面应该会改变向右爆炸的图片（确实如此），但它也应该改变缩略图下方框中的文本。使用我之前被引导的本指南，我开始构建。
即使我更改了所有内容的名称，该论坛上的代码也可以正常运行。但是，当我将它放在画廊所需表格内的 div 中时，它似乎坏了。文本永远不会改变我设置的默认值。我尝试更改标题中的实际脚本以响应单个 div 的鼠标悬停，但这似乎也没有完成这项工作。
我是否正确使用了 document.getElementById().innerHTML？我能想到的唯一事情是更改脚本破坏了它，或者通过将标识图片的 JavaScript div 放置在与输出文本框不同的 div 中，我让它不开心。请你们中的任何人指出我正确的方向吗？
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Single Mouseover</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script type="text/javascript">
var dogtext='The domestic dog (Canis lupus familiaris), is a subspecies of the gray wolf (Canis lupus), a member of the Canidae family of the mammilian order Carnivora.'
var cattext='The domestic cat (Felis catus or Felis silvestris catus) is a small, usually furry, domesticated, carnivorous mammal.'
var parrottext='Parrots, also known as psittacines are birds of the roughly 372 species in 86 genera that make up the order Psittaciformes, found in most tropical and subtropical regions.'
var lizardtext='Lizards are a widespread group of squamate reptiles, with more than 5600 species , ranging across all continents except Antarctica as well as most oceanic island chains.'
var horsetext='The horse (Equus ferus caballus) is one of two extant subspecies of Equus ferus, or the wild horse.'
var chickentext='The chicken (Gallus gallus domesticus) is a domesticated fowl, a subspecies of the Red Junglefowl.'
function writetext(){
document.getElementById('p1').innerHTML=dogtext;
document.getElementById('p2').innerHTML=cattext;
document.getElementById('p3').innerHTML=parrottext;
document.getElementById('p4').innerHTML=lizardtext;
document.getElementById('p5').innerHTML=horsetext;
document.getElementById('p6').innerHTML=chickentext;
}
</script>
<link href="TextSwapTestCSS.css" rel="stylesheet">
</head>
<body>
<td width="1000" rowspan="3">
<div id="gallery">
<ul>
<div id="p1" onmouseover="writetext(dogtext)" ><li><a href="dog.jpg"><img src="dog.jpg" width="100" height="75" alt="dog">
<span><img src="dog.jpg" width="400" height="300" alt="dog"><br>This is a cool looking dog.</span></a></div>
</li>
<li><div id="p2" onmouseover="writetext(cattext)" ><a href="cat.jpg"><img src="cat.jpg" width="100" height="75" alt="cat">
<span><img src="cat.jpg" width="400" height="300" alt="cat"><br>Just a cute kitten.</span></a></div>
</li>
<li><div id="p3" onmouseover="writetext(parrottext)" ><a href="parrot.jpg"><img src="parrot.jpg" width="100" height="75" alt="parrot">
<span><img src="parrot.jpg" width="400" height="300" alt="parrot"><br>A rainbow parrot just hanging out.</span></a></div>
</li>
<li><div id="p4" onmouseover="writetext(lizardtext)" ><a href="lizard.jpg"><img src="lizard.jpg" width="100" height="75" alt="lizard">
<span><img src="lizard.jpg" width="400" height="300" alt="lizard"><br>A green lizard just chillin'.</span></a></div>
</li>
<li><div id="p5" onmouseover="writetext(horseext)" ><a href="horse.jpg"><img src="horse.jpg" width="100" height="75" alt="horse">
<span><img src="horse.jpg" width="400" height="300" alt="horse"><br>A horse running through a field.</span></a></div>
</li>
<li><div id="p6" onmouseover="writetext(chickentext)" ><a href="chicken.jpg"><img src="chicken.jpg" width="100" height="75" alt="chicken">
<span><img src="chicken.jpg" width="400" height="300" alt="chicken"><br>A chicken in an alley.</span></a></div>
</ul>
<div id="textarea" style="height:250px;width:220px;font:16px;font:16px/26px Arial, Helvetica, sans-serif;overflow:scroll; position:relative;
top:300px; left:-230px;">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi pulvinar lectus non lectus auctor egestas. Donec at nunc neque. Morbi ornare condimentum lobortis. Nam vehicula urna ac mauris pharetra rutrum. Duis et arcu eget sapien interdum porttitor ut et tortor. Maecenas ultricies dignissim pretium. Integer quis enim metus. Sed enim lacus, eleifend eu euismod volutpat, blandit eu sem. Vestibulum varius purus ut est accumsan pellentesque. Donec quis enim id lectus sollicitudin suscipit at volutpat augue. Curabitur et metus purus. Fusce luctus nunc vitae sapien pharetra id accumsan lectus malesuada.</div>
</div>
</td>
</body>
</html>
<!--HERE BEGINS THE CSS TO MAKE THE GALLERY WORK-->
#gallery {position: relative; }
#gallery ul {list-style-type: none;
width: 300px; }
#gallery li { display: inline;
float: left;
padding: 10px; }
#gallery img {border-style: solid: 10px; border-color: #333; }
#gallery a { text-decoration: none;
font-style: none;
color: #333; }
#gallery span {display: none; }
#gallery a:hover span {display: block;
position: absolute;
top: 10px;
left: 300px;
text-align: center; }