sh1tn already gave you the solution, just want to point out that the credentials you were using would work if the site is using the basic authentication (the popup window you see in some sites), rather than a login page. In the latter case, you need to scrap that page directly as sh1tn did (look at the html source to get the field names correctly.)

In reply to Re: Log into a screen and getting a response by johnnywang
in thread Log into a screen and getting a response by Anonymous Monk

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