I wanna know the direct URL for signing in to a website like http://www.mmm.com/default.aspx?id=a...ate=vhsireuhfv
But I don't know how to find it!!! I have tried some varieties but not useful.

The source code contains:

1- <input type="hidden" name="__VIEWSTATE" value="dDwzNTU2MjMyMTU7dDw7b..."

2- <input name="MemberSignin1:tbNickname" type="text" maxlength="255" size="20" id="MemberSignin1_tbNickname"

3- <input name="MemberSignin1:tbPassword" type="password" maxlength="20" size="20" id="MemberSignin1_tbPassword"

In frontpage you should enter "Nickname" and "Password".
The site has two versions with http and https. I prefer to know the direct login URL for https one, if possible. Please help me or give me some keywords for googling.