function fieldLimit(txarea,tamanho) {
    total = tamanho;
    tam = txarea.value.length;
    str="";
    str=str+tam;
    Digitado.innerHTML = str;
    Restante.innerHTML = total - str;
    if (tam > total){
      aux = txarea.value;
      txarea.value = aux.substring(0,total);
      Digitado.innerHTML = total
      Restante.innerHTML = 0
    }
  }

  function toUpper(campo){
	var val = campo.value;
	if (val.length > 0) campo.value = val.toUpperCase();
  }

  function toLower(campo){
	var val = campo.value;
	if (val.length > 0) campo.value = val.toLowerCase();
  }

  function onlynumber(campo) {
    if(((event.keyCode < 48) || (event.keyCode > 57)) && event.KeyCode != 8 && event.KeyCode !=13  ) {
        campo.focus();
        event.returnValue = false;
    }
  }

  function formatar(pCampo, pMascara) {
	    var i     = pCampo.value.length;
	    var saida = pMascara.substring(1,2);
	    var texto = pMascara.substring(i);
	    if (texto.substring(0,1) != saida) pCampo.value += texto.substring(0,1);
  }