There are ways to get the SessionId from Cookie automatically.
*My Favorite Open Source Projects awsome-lists
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 Hi all
 maybe you know, last tuesday Yahoo finance denied automated download of
 historical data, putting a mandatory  "ID cookie" in the query of download.
 The good news
 It seems to me the  "ID cookie" is unique for every query caming from a
 single browser.
 E.G. I opened another browser in my machine and the cookie changed, BUT
 when I asked another series of data, did not.
 I find this right now, so I dont know if the "ID cookie" changes day by
 day.
 I think a rough way to bypass the restriction is quite simple.
 a) Manually find the our own "ID cookie" (EG going with the mouse over the
 download link, then reading the last part of the syntiax of the query, at
 the bottom of windows )
 b) put it in the query
 The bad news
 I cant write the changes by myself and so giving a service to the
 community.
 So please, could somebody verify my hypothesis and - if the trick is good
 - writing the additional code, inserting a new voice in the yahoo download
 menu (EG "Enter your cookie")? Could be sufficent BUT
 moreover I suggest to delay in some way two successive query, to avoid
 more stringent measures from Yahoo.
 Regards
 Guido
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