select onchange

问题解决了:<!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>无标题文档</title>
<script type="text/JavaScript">
<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
alert(targ);
alert(selObj.options[selObj.selectedIndex].value);
alert(selObj.options[selObj.selectedIndex].text);
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->
</script>
</head><body>
<form name="form1">
  <select name="menu2" onchange="MM_jumpMenu('parent',this,0)">
    <option value="http://www.hao123.com">hao123</option>
<option value="http://www.google.com">google</option>
<option value="http://www.baidu.com">baidu</option>
  </select>
</form>
</body>
</html>