How can I request a server in url take with username and password in Axis Camera

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http://pub:123@myipaddress/axis-cgi/jpg/image.cgi?resolution=4CIF
when I use the url address , it shows different in the chrome,firefox and IE 9
1) chrome can give me a picture and display.
2) firefox first show me a check dialog box, when you click ok, it can give me the right picture.
3) IE 9, it shows me 'Windows cannot find....' dialog box

Is there any way to access the camera server like the chrome browser.
I want to use asp.net to request the camera server, when using 'http://myipaddress/axis-cgi/jpg/image.cgi?resolution=4CIF' , it shows the 'Windows Security' dialog box for the username and password. I hope to send the username and password in the c# code and I don't want to see the 'Windows Security' dialog box , But I don't want to set up ' Enable anonymous viewer login ' in the camera server's users setup .

Is there any way to solve it ?
Thanks very much.