lexical error - help needed

i am getting the following error: Lexical error at line 1, column 29. Encountered: "\u201c" (8220), after : ""

trying to create a bunch of "if" statements that would then change the value of a different field. i've used this script code before with no problems, not sure why it's giving me this error here.

here's the code, "on user input" for field "ad_network":

if ((input.Ad_Network == �24/7 Real Media"))
{
Ad_Network_Code = �247ma";
}
else if ((input.Ad_Network == �aCerno"))
{
Ad_Network_Code = �crnxo";
}
else if ((input.Ad_Network == �AdBrite"))
{
Ad_Network_Code = �dbrtn";
}
else if ((input.Ad_Network == �AdDynamix"))
{
Ad_Network_Code = �ddynm";
}
else if ((input.Ad_Network == �Adify"))
{
Ad_Network_Code = �dfyxx";
}
else if ((input.Ad_Network == �Adtegrity"))
{
Ad_Network_Code = �dtgrt";
}
else if ((input.Ad_Network == �Advertising.com"))
{
Ad_Network_Code = �dvrtm";
}
else if ((input.Ad_Network == �AOL Network"))
{
Ad_Network_Code = �lntwr";
}
else if ((input.Ad_Network == �Blue Lithium"))
{
Ad_Network_Code = �rdmnn";
}
else if ((input.Ad_Network == �Burst"))
{
Ad_Network_Code = �brstm";
}
else if ((input.Ad_Network == �Casale Media"))
{
Ad_Network_Code = �cslma";
}
else if ((input.Ad_Network == �Collective Media"))
{
Ad_Network_Code = �cllca";
}
else if ((input.Ad_Network == �Commission Junction"))
{
Ad_Network_Code = �cmmsn";
}
else if ((input.Ad_Network == �ContextWeb"))
{
Ad_Network_Code = �cntxi";
}
else if ((input.Ad_Network == �CPX Interactive"))
{
Ad_Network_Code = �cpxnt";
}
else if ((input.Ad_Network == �DrivePM"))
{
Ad_Network_Code = �drvpm�;
}
else if ((input.Ad_Network == �Adconion ((Euroclick))"))
{
Ad_Network_Code = �euroc";
}
else if ((input.Ad_Network == �Glispa"))
{
Ad_Network_Code = �glspl";
}
else if ((input.Ad_Network == �Interclick"))
{
Ad_Network_Code = �mdddl";
}
else if ((input.Ad_Network == �Interep Interactive"))
{
Ad_Network_Code = �ntrpv";
}
else if ((input.Ad_Network == �Permission Data"))
{
Ad_Network_Code = �prmss";
}
else if ((input.Ad_Network == �Q Interactive"))
{
Ad_Network_Code = �clsvn�;
}
else if ((input.Ad_Network == �Quake Marketing"))
{
Ad_Network_Code = �cntxt";
}
else if ((input.Ad_Network == �Red McCombs Media"))
{
Ad_Network_Code = �rdmcc";
}
else if ((input.Ad_Network == �Revenue Science"))
{
Ad_Network_Code = �thrvk";
}
else if ((input.Ad_Network == �Right Media"))
{
Ad_Network_Code = �rghtc";
}
else if ((input.Ad_Network == �SpecificMEDIA"))
{
Ad_Network_Code = �spcfa";
}
else if ((input.Ad_Network == �Tacoda"))
{
Ad_Network_Code = �tcdxx�;
else if ((input.Ad_Network == �Traffic MarketPlace"))
{
Ad_Network_Code = �trffe";
}
else if ((input.Ad_Network == �Travel Ad Network"))
{
Ad_Network_Code = �ntwii";
}
else if ((input.Ad_Network == �Tremor Media"))
{
Ad_Network_Code = �trmrm";
}
else if ((input.Ad_Network == �Tribal Fusion"))
{
Ad_Network_Code = �trblf";
}
else if ((input.Ad_Network == �Turn"))
{
Ad_Network_Code = �trnnc";
}
else if ((input.Ad_Network == �Undertone"))
{
Ad_Network_Code = �ndrtn�;
else if ((input.Ad_Network == �ValueClick"))
{
Ad_Network_Code = �vlclc";
}
else if ((input.Ad_Network == �Veremedia"))
{
Ad_Network_Code = �vrmda";
}
else if ((input.Ad_Network == �Vizi Media"))
{
Ad_Network_Code = �vrmda";
}
else if ((input.Ad_Network == �X+1"))
{
Ad_Network_Code = �x1xxx";
}