function efetua()
{
  ok = confirm( 'Confirma a operação?' );
	if ( ok )
	{
		mostra_msg();
	  document.formulario.efetuar.value = 1;
	}
	return ok;
}

function mostraMenu( cCamada, nAcao )
{
  showHideLayers( cCamada, '', nAcao );
  oMenu = findObj( cCamada );
  if ( ( oFrame = findObj( 'iframe_' + cCamada ) ) != null )
	{
    oFrame.style.left    = oMenu.style.left;
    oFrame.style.top     = oMenu.style.top;
    oFrame.style.width   = oMenu.style.width;
    oFrame.style.height  = oMenu.style.height;
		oFrame.style.zIndex  = ( oMenu.style.zIndex - 1 );
		
		if ( nAcao == 1 )
			oFrame.style.visibility = "visible";
		else	
			oFrame.style.visibility = "hidden";		
  }
}

function trocaCamada( cCamada, cDisplay )
{
  oMenu = findObj( cCamada );	
  oMenu.style.display = cDisplay;
}

function Primeira()
{
	document.formulario.pagina.value = 0;
	return true;
}	

function Ultima( pagina )
{
	document.formulario.pagina.value = pagina;
	return true;
}

function Proxima()
{
	document.formulario.pagina.value = parseInt(document.formulario.pagina.value) + 1;
	return true;
}	

function Anterior()
{
	document.formulario.pagina.value = parseInt(document.formulario.pagina.value) - 1;
	return true;
}	

function Ir_Para()
{
	if ( !document.formulario.nova_pagina.value == "" )
		document.formulario.pagina.value = parseInt(document.formulario.nova_pagina.value) - 1;
	return true;
}				

function Limpa_Filtro()
{
	document.formulario.filtro.value = "";
	return true;
}