编写高质量的代码--基础：结构和样式，行为的分离

<td width="100%" height="20" class="f9pt" align="center">
　　<font color="#346F0E">下载</font>
　　<input type="text" name="wd" size="40" onMouseOver="this.focus()" onFocus="this.select()" style="margin-bottom:-5px;font-size:16px;height:1.78em;font-family:arial,sans-serif,宋体;padding-top:2px;padding-left:1px" maxlength="100">
</td>

<link rel=”stylesheet” type=”text/css” href=”test.css” />
<td class="f9pt myTd">
　　<span class=”myFont”>下载</span>
　　<input type=”text” name=”wd” size=”40” id=”myInput” maxlength=”100” />
</td>
<script type=”text/Javascript” src=”test.js”></script>

.myTd{width:100%;height:20px;text-align:center;}
.myFont{color:#346F0E;}
#myInput{margin-bottom:-5px;font-size:16px;height:1.78em;font-family:arial,sansserif,宋体;padding-top:2px;padding-left:1px} 

var myInput = document.getElementById(“myInput”);
　　myInput.onmouseover = function(){
　　this.focus();
}
myInput.onfocus = function(){
　　this.select();
}

<style type=”text/CSS”>
　　.myTd{width:100%;height:20px;text-align:center;}
　　.myFont{color:#346F0E;}
　　#myInput{margin-bottom:-5px;font-size:16px;height:1.78em;font-family:arial,sansserif,宋体;padding-top:2px;padding-left:1px}
</style>


<td class="f9pt myTd">
　　<span class=”myFont”>下载</span>
　　<input type=”text” name=”wd” size=”40” id=”myInput” maxlength=”100” />
</td>
 
<script type=”text/Javascript”>
var myInput = document.getElementById(“myInput”);
　　myInput.onmouseover = function(){
this.focus();
}
myInput.onfocus = function(){
　　this.select();
}
</script>