Using Execute with Dynamic Raise Commands

Hi All,
I've been trying to create a debugging function that would receive a
tablename and a list of columns and then the function would display all
the contents of the table using the RAISE command.

CREATE OR REPLACE FUNCTION usp_PG_DUMPTEMPTABLE(varchar(100), text[])
RETURNS void AS
$BODY$
DECLARE
_temptable ALIAS FOR $1;
_temparray alias for $2;

_i integer;
_max integer;
_tempstring varchar(2000);

BEGIN

_tempstring := 'RAISE INFO''';
for _i in 1 ..array_upper(_temparray, 1)
loop
_tempstring := _tempstring || _temparray[_i] || ' ' ;
end loop;
_tempstring := _tempstring || ''';';

raise info'%', _tempstring;
execute _tempstring;
raise info '---';

RETURN;
END;
$BODY$
LANGUAGE 'plpgsql';

for some reason, the EXECUTE command issues an error at the start fo the
RAISE command...help?

Error from PG Admin III

ERROR: syntax error at or near "RAISE"
LINE 1: RAISE DEBUG 'SKUID CatID ';
^
QUERY: RAISE DEBUG 'SKUID CatID ';
CONTEXT: PL/pgSQL function "usp_pg_dumptemptable" line 42 at EXECUTE
statement

Regards