Como abrir script na div conteudo

<script type="text/javascript">
function Filtro(){
        if(document.getElementById('filtro').style.display == 'none'){
            document.getElementById('filtro').style.display='';
            document.getElementById('pesquisa').focus();
        }else
            document.getElementById('filtro').style.display='none';
    }
    function Filtrar(){
        if(document.getElementById('nome').checked)
            document.form1.campofiltro.value = document.getElementById('nome').value;
        else
        if(document.getElementById('codigo').checked)
            document.form1.campofiltro.value = document.getElementById('codigo').value;
        else
        if(document.getElementById('cnpj').checked)
            document.form1.campofiltro.value = document.getElementById('cnpj').value;

        document.form1.textopesquisa.value = document.getElementById('pesquisa').value;

        document.getElementById('acao').value='Filtrar';
        document.form1.submit();
    }
    function Todos(){
        document.form1.textopesquisa.value = '%';
        document.getElementById('acao').value='Filtrar';
        document.form1.submit();
    }
    function Excluir(cod){
        if(confirm('Deseja excluir registro?')){

            document.getElementById('acao').value='Excluir';
            document.getElementById('cod').value=cod;

            document.form1.submit();
        }
    }

    function AltSenha(cod){

            document.getElementById('acao').value='AltSenha';
            document.getElementById('cod').value=cod;

            document.form1.submit();
    }

    function Pagina(i){
        document.form1.hpag.value = i;
                                document.form1.acao.value = "";
        document.form1.submit();
    }
    function Ordena(campo){
        if(campo==document.form1.campoordem.value){
            if((document.form1.contordem.value == '')|| (document.form1.contordem.value == 1)){
                document.form1.acao.value = 'Filtrar';
                document.form1.contordem.value = 2;
                document.form1.campoordem.value = campo;
                document.form1.submit();
            }else
            if(document.form1.contordem.value == 2){

                document.form1.contordem.value = 1;
                document.form1.campoordem.value = campo;
                document.form1.acao.value = 'Filtrar';
                document.form1.submit();
            }
        }else{
                document.form1.contordem.value = 2;
                document.form1.campoordem.value = campo;
                document.form1.acao.value = 'Filtrar';
                document.form1.submit();
        }

    }
</script>

<....>


<div class="botao_buscar">
<a href="#"  onclick="Filtrar()" name="botao" value="Filtrar" id="botao_buscar" style="color:#FFF; text-shadow: black 0.1em 0.1em 0.2em;">&nbsp; &nbsp;Buscar<img src="imagens/lupa.png" style="float: right;" border="0"></a>
</div>


                </td>
            <!-- Fim Oculta Filtro -->
            </tr>
        </table>


<table class="style4" width="100%" cellpadding="0" cellspacing="0">
  <tr class="titulo"><!-- Colunas da tabela -->
 <td width="8%" onclick="JavaScript:Ordena('codigo')" style="cursor:pointer" align="center">C&oacute;digo</td>
                    <td width="37%" onclick="JavaScript:Ordena('nome')" style="cursor:pointer">Nome</td>
                    <td width="35%" onclick="JavaScript:Ordena('email')" style="cursor:pointer">Email</td>
                    <td width="5%" onclick="JavaScript:Ordena('editar')" style="cursor:pointer" align="center">Editar</td>
                    <td width="10%" onclick="JavaScript:Ordena('editar')" style="cursor:pointer" align="center">Alterar Senha</td>
                    <td width="10%" align="center">Excluir</td>
                </tr>