WPA_Supplicant and multiple networks with different 'media'

Hello,

Ok... I've got wpa_supplicant working fine.  Even starts up when I boot 
(Thx Bakul).  But now I would like it to work with multiple networks.

I believe my wpa_supplicant.conf is setup properly (appended to bottom). 
  The problem appears to be that my multiple networks are "different 
media", so to speak.  One is b the other g.... one is on channel 11 the 
other 6.... one is defaulting to one wep key the other is different.  It 
never tries anything but my home networks "media" type.  That being the 
last media it successfully connected to.  If I manually change things 
using ifconfig... it will associate with the office network.  But seems 
this should be automatic.

How (in wpa_supplicant.conf maybe?) can I give it a few types of media 
to cycle through like it does the network blocks?  I would think it 
logical to have a "media" parameter=value pair inside the network block 
but I don't see it in the man page.

I have seen recent (a month or so) posts saying the man pages have not 
yet been updated.. maybe that is still the case.  So a second question 
would be... where can I find an additional source of current info on 
wpa_supplicant configuration?  I have looked through man pages, online 
manual, FreeBSD mail lists, etc... maybe I'm just not looking for the 
right stuff.  Pointers would be appreciated.

Thanks for the help.

My wpa_supplicant.conf:

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel

# Home Network
network={
    ssid="MySSID"
    scan_ssid=1
    key_mgmt=NONE
    wep_tx_keyidx=0
    wep_key0="MyPassphrase"
}

# Office Network
network={
    ssid="OfficeSSID"
    scan_ssid=1
    key_mgmt=NONE
    wep_tx_keyidx=0
    wep_key0="OfficePassphrase"
}

-- 
Regards,
Eric