http://cgi3.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=SignInWelcome&userid=userid&pass=pass&keepMeSignInOption=1&ru=http%3A%2F%2Fcontact.ebay.com%2Faw-cgi%2FeBayISAPI.dll%3FReturnUserEmail%26requested%3Duser%26de%3Doff%26iid%3D1733367971%26frm%3D284%26acceptcookie%3D1%26loginconfirmed%3D1%26pass%3D%7B_pass_%7D%26userid%3D

##</code><code>##

$main_request = "http://cgi3.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=SignInWelcome&userid=userid&pass=pass&keepMeSignInOption=1&ru=";
$ru = "http://encode_this/";
# Encode $ru ?????
$main_request += $ru;

# Send $main_request