我用如下方式取得mac , 并用document.getElementById('Hidden1').value = unescape(MACAddr)传到  服务器控件<input id="Hidden1" type="hidden" readonly="readonly" runat="server"
                        style="color: #ff0066; width: 123px;" />我要做的事情是先打开页面c时如果客户机mac已经登记过则直接跳到页面 a 如果mac 没登记过 就直接跳到页面 b 在 cs  的 page_load 里面 这样取Request["Hidden1"].ToString() ,取出来是空的 , 原因是 page_load先于页面jsp执行, 请问各位高手有没办法解决这个问题?
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>WMI Scripting HTML</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<SCRIPT language=JScript event="OnCompleted(hResult,pErrorObject, pAsyncContext)" for=foo>
document.forms[0].txtMACAddr.value=unescape(MACAddr);
document.forms[0].txtIPAddr.value=unescape(IPAddr);
document.forms[0].txtDNSName.value=unescape(sDNSName);
//document.formbar.submit();
</SCRIPT><SCRIPT language=JScript event=OnObjectReady(objObject,objAsyncContext) for=foo>
  if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true)
  {
  if(objObject.MACAddress != null && objObject.MACAddress != "undefined")
  MACAddr = objObject.MACAddress;
  if(objObject.IPEnabled && objObject.IPAddress(0) != null && objObject.IPAddress(0) != "undefined")
  IPAddr = objObject.IPAddress(0);
  if(objObject.DNSHostName != null && objObject.DNSHostName != "undefined")
  sDNSName = objObject.DNSHostName;
  }
</SCRIPT><META content="MSHTML 6.00.2800.1106" name=GENERATOR></HEAD>
<BODY>
<OBJECT id=locator classid=CLSID:76A64158-CB41-11D1-8B02-00600806D9B6 VIEWASTEXT></OBJECT>
<OBJECT id=foo classid=CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223></OBJECT>
<SCRIPT language=JScript>
  var service = locator.ConnectServer();
  var MACAddr ;
  var IPAddr ;
  var DomainAddr;
  var sDNSName;
  service.Security_.ImpersonationLevel=3;
  service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
  </SCRIPT><FORM id="formfoo" name="formbar" action="index.do" method="post">
<INPUT value="00-11-11-B4-52-EF"   name="txtMACAddr"> 
<INPUT value="210.42.38.50" name="txtIPAddr"> 
<INPUT value="zhupan" name="txtDNSName"> </FORM></BODY></HTML>