功能，把子页面的数值传递到父页面中
Parent..htm
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head>
<script language="JavaScript">...
function showchild()...{
window.open("child.htm","mywin", "menubar=no,width=400,height=100,resizeable=yes");
}</script></head><body><input type="button" onClick="showchild()" value="showchild"/><input type="text" id="parent"/></body></html>child.htm
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><script language="JavaScript">... function closechild()...{ var input=document.getElementById("child"); window.opener.document.getElementById("parent").value=input.value; window.close(); }</script></head><body><input type="text" id="child"/><input type="button" value="close" onClick="closechild()"/></body></html>