lhg在弹出窗口里获得父窗口的值代码，注意这个是在弹出的文件里写

<script type="text/javascript">

var api = frameElement.api, W = api.opener;

window.onload = function()

{

//alert(W.document.getElementById('txt1').value);

    document.getElementById('itxt').value = W.document.getElementById('txt1').value;

};

 </script>