转载http://zxh277100963.iteye.com
使用CSS样式设置，兼容IE、Chrome、Firefox。。。
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<html>
<head>
<title> 可编辑下拉框 </title>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</head>
<body>
<table border="0" style="border-collapse:collapse ">
<tr>
<td>
<div style="position:relative;">
<span id="spanfindvalue1" style="margin-left:200px;width:18px;overflow:hidden;">
<select id="selectfindvalue1" class="text" style="width:218px;margin-left:-200px" onchange="this.parentNode.nextSibling.value=this.options[this.selectedIndex].text">
<option value="可编辑下拉框" selected>可编辑下拉框</option>
<option value="456">iphone 5S</option>
<option value="123">123</option>
<option value="456">456</option>
</select>
</span><input name="findValue" id="findValue1" class="text" style="width:200px;position:absolute;left:0px;" onclick="">
</div>
</td>
</tr>
</table>
</BODY>
</HTML>
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