<script type="text/javascript">
        $(document).ready(function(){

            $('#cima').autocomplete(
                {
                    source: '<?php echo base_url(); ?>admin/clientes/teste'
                }
            );

        });

    </script>


                <form method="post" action="<?php echo base_url().'admin/clientes/buscar'?>">
                    <li class="busca_cima"> <input type="text" id="cima" name="cima"/></li>
                    <li class="busca_cima"> <input type="submit" value="Buscar" /></li>
                </form>