/****************************************************************
*	Criado em:		08/01/2008			Por: ANDRÉ LUIZ
****************************************************************/

function showHideDuvida(objLink){
	var vc_display						= new String(objLink.parentNode.lastChild.style.display);
	var vc_display_original				= new String(vc_display);
	var objContainer					= objLink.parentNode.lastChild.style;
	var objSinal						= objLink.parentNode.firstChild;
	var ar_links						= document.getElementsByName('lk_duvida');
	
	// fecha todas as perguntas abertas
	for (var i = 0; i < ar_links.length; i++){
		if(typeof(ar_links[i]) == 'object'){
			with(ar_links[i].parentNode){
				lastChild.style.display	= 'none';
				firstChild.innerHTML	= '+&nbsp;';
			}
		}
	}
	
	// exibe a resposta da pergunta clicada
	if(vc_display_original == 'block'){
		objContainer.display			= 'none';
		objSinal.innerHTML				= '+&nbsp;';
	} else {
		objContainer.display			= 'block';
		objSinal.innerHTML				= '&minus;&nbsp;';
	}
}