请熟悉http头文件的高手帮忙啊，我真的不太懂，所以有个问题解决不了啊

我的同一个按钮，在firefox里可以执行，很顺利，但是在ie7里面却不行，我看了一下他们的头文件内容，但是对这个也不熟悉。
firefox:

HTTP/1.0 302 Moved Temporarily
Date: Tue, 19 Oct 2010 01:51:31 GMT
Server: Apache
X-Powered-By: PHP/5.2.5
Set-Cookie: nolife=fromdomain%3D; path=/; domain=.＊＊＊＊.com
Set-Cookie: nolife=fromdomain%3D; path=/; domain=.＊＊＊＊.com
Location: http://＊＊.＊＊＊＊.com/companyads/2010vip/sh/2011dhl.xls
Content-Length: 0
Content-Type: text/html
X-Cache: MISS from SH-Proxy-01.＊＊＊＊.Com
Proxy-Connection: keep-alive
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
http://＊＊.＊＊＊＊.com/companyads/2010vip/sh/2011dhl.xls
GET http://＊＊.＊＊＊＊.com/companyads/2010vip/sh/2011dhl.xls HTTP/1.1
Host: companyads.51job.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-cn,zh;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Proxy-Connection: keep-alive
Referer: http://search.＊＊＊＊.com/job/44230569,c.html
Cookie: ＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊



而在ｉｅ中

却运行到这里
HTTP/1.0 302 Moved Temporarily
Date: Tue, 19 Oct 2010 02:05:17 GMT
Server: Apache
X-Powered-By: PHP/5.2.5
Location: http://＊＊.＊＊＊＊.com/companyads/2010vip/sh/2011dhl.xls
Content-Length: 0
Content-Type: text/html
X-Cache: MISS from SH-Proxy-02.＊＊＊＊.Com
Proxy-Connection: keep-alive
下面就没有了

什么问题呢？不知道从这些能不能看出问题？是不是因为下面没有set-cookie的原因？我真的是毫无头绪，更奇怪的是在遨游里又可以正常运行。

没区别啊，不都重定向到2011dhl.xls文件了么。