<html>
<body>
<formname=form1>
<inputtype=text name=inpu >
<inputtype=button onclick="javascript:window.open('back2opener.html?toname=opener.form1.inpu');">
</form>
</body>
</html>
--------------------------------
back2opener.html
--------------------------------
<html>
<body>
<formname=form1>
<inputtype=text name=inpu >
<a class=under href=#onclick="{opener.document.form1.inpu.value+='孙超,';}">添加</a>
</form>
</body>
</html>