======================================父窗体
<input id="aaaa" type="button"/>
function upfile()
{
resultValue = window.showModelessDialog("ceshi.aspx?file=DownFile", window, "dialogWidth=700px;dialogHeight=70px");
}
======================================子窗体
window.dialogArguments.document.form1.aaaa.value="asdad";
window.dialogArguments.document.getElementById("coursefile").innerText="asdad";
本文出自 “程序猿的家” 博客，请务必保留此出处http://962410314.blog.51cto.com/7563109/1413769