前端设计之输入框提示列表的效果

网页代码：
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>输入框-提示列表</title>

<style type="text/css">
<!--
/**/
body{background:#CCC}

.Menu {
position:relative;
204px;
height:127px;
z-index:1;
background: #FFF;
border:1px solid #000;
margin-top:-100px;
display:none;
}

.Menu2 {
position: absolute;
left:0;
top:0;
100%;
height:auto;
overflow:hidden;
z-index:1;
}
.Menu2 ul{margin:0;padding:0}
.Menu2 ul li{100%;height:25px;line-height:25px;text-indent:15px;
             border-bottom:1px dashed #ccc;color:#666;cursor:pointer;
 change:expression(
  this.onmouseover=function(){
    this.style.background="#F2F5EF";
  },
  this.onmouseout=function(){
    this.style.background="";
  }
 )
}

input{200px}

.form{200px;height:auto;}
.form div{position:relative;top:0;left:0;margin-bottom:5px}

#List1,#List2,#List3{left:0px;top:93px;}
-->
</style>
<script type="text/javascript">
  /*
  显示或隐藏提示框
  */
  function showAndHide(obj,types)
  {
    var Layer=window.document.getElementById(obj);
    switch(types)
	{
  		case "show":
    		Layer.style.display="block";
  			break;
  		case "hide":
    		Layer.style.display="none";
  			break;
	}
  }
  
  function getValue(obj,str)
  {
    var input=window.document.getElementById(obj);
	input.value=str;
  }
</script>

</head>
<body>



<div class="form">

 <div> 
 	国家：<input type="text" id="txt" name="txt" onfocus="showAndHide('List1','show');" onblur="showAndHide('List1','hide');">
 </div>
 <!--列表1-->
 <div class="Menu" id="List1">
 	<div class="Menu2">
    	<ul>
  			<li onmousedown="getValue('txt','中国CHINA');showAndHide('List1','hide');">中国CHINA</li>
  			<li onmousedown="getValue('txt','美国USA');showAndHide('List1','hide');">美国USA</li>
            <li onmousedown="getValue('txt','日本JAPAN');showAndHide('List1','hide');">日本JAPAN</li>
            <li onmousedown="getValue('txt','澳大利亚JAUSTRALIA');showAndHide('List1','hide');">澳大利亚JAUSTRALIA</li>
		</ul>
    </div>
</div>

<div> 
	性别：<input type="text" id="txt2" name="txt2" onfocus="showAndHide('List2','show');" onblur="showAndHide('List2','hide');">
</div>
    <!--列表2-->
   <div class="Menu" id="List2">
   	 <div class="Menu2">
    	<ul>
 		 	<li onmousedown="getValue('txt2','男Male');showAndHide('List2','hide');">男Male</li>
  			<li onmousedown="getValue('txt2','女Female');showAndHide('List2','hide');">女Female</li>
		</ul>
      </div>
   </div>
<div> 
	学历：<input type="text" id="txt3" name="txt3" onfocus="showAndHide('List3','show');" onblur="showAndHide('List3','hide');">
</div>
    <!--列表3-->
   <div class="Menu" id="List3">
   	  <div class="Menu2">
		<ul>
  			<li onmousedown="getValue('txt3','大专');showAndHide('List3','hide');">大专</li>
  			<li onmousedown="getValue('txt3','本科');showAndHide('List3','hide');">本科</li>
    		<li onmousedown="getValue('txt3','硕士');showAndHide('List3','hide');">硕士</li>
   			<li onmousedown="getValue('txt3','博士');showAndHide('List3','hide');">博士</li>
            <li onmousedown="getValue('txt3','其它');showAndHide('List3','hide');">其它</li>
		</ul>
      </div>
   </div>
   <br/>
<div>
	<input type="button" value="确认"/>
</div>
  
</div>


</body>
</html>
效果截图：