JavaScript实现Select下拉头像实时预览功能

<!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=gb2312" />
<title>select头像选择代码</title>
</head>
<body>
<select name=lanrentuku onchange="document.images['idface'].src=options[selectedIndex].value;">
<option value="images/ico1.gif" >头像01</option>
<option value="images/ico2.gif" >头像02</option>
<option value="images/ico3.gif" >头像03</option>
</select>  
<div style="position:absolute;"><img src="images/ico1.gif" id=idface></div>
</body>
</html>