basic function not working

Hi, could somebody tell me what I'm missing here?

Postgres appears to not know where to look for the table I am using in my SELECT INTO clause because the error says it is coming before the FROM word.

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the function is:

SET search_path = public;

CREATE or replace FUNCTION user_tablere (text) RETURNS text AS '
DECLARE
-- Declare aliases for function arguments.
location_in ALIAS FOR $1;
username text;

BEGIN

SELECT into username FROM user_table WHERE location = location_in;
return username;

END;
' LANGUAGE 'plpgsql';

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which gives this out:

Welcome to psql 7.3.1, the PostgreSQL interactive terminal.

Type: \copyright for distribution terms
\h for help with SQL commands
\? for help on internal slash commands
\g or terminate with semicolon to execute query
\q to quit

address=# \e a_a.sql
SET
CREATE FUNCTION
address=# select user_tablere('sacu');
WARNING: Error occurred while executing PL/pgSQL function user_tablere
WARNING: line 12 at select into variables
ERROR: parser: parse error at or near "FROM" at character 9
address=#

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--
joe speigle