//HTTP Request AjAX
function ObjAjax(){
	try{return new XMLHttpRequest()}
	catch(e){try{return new ActiveXObject("Msxml2.XMLHTTP")}
	catch(e){return new ActiveXObject("Microsoft.XMLHTTP")}}
	return null;
}

function showD(obj){
	var div = document.getElementById("i"+obj);
	var img = document.getElementById("img2"+obj);
	if(div != null){
	if(div.style.display == "none"){div.style.display = "block";img.src="imagens/sinal_subtopico_menos.gif"}else{div.style.display = "none";img.src="imagens/sinal_subtopico.gif"}
	}

}

function showDD(obj){
	var div = document.getElementById("d"+obj);
	var img = document.getElementById("img"+obj);
	if(div != null){
	if(div.style.display == "none"){div.style.display = "block";img.src="imagens/sinal_subtopico_menos.gif"}else{div.style.display = "none";img.src="imagens/sinal_subtopico.gif"}
	}
}

function valContato(){
	var frm = document.frm;
	var err = "Os items com * devem ser preenchidos.\nPreencha os seguintes campos:\n";
	
	if(!frm.nome.value)err+="* Nome\n";
	if(!frm.email.value)err+="* E-mail\n";
	if(!frm.telefone.value)err+="* Telefone\n";
	if(!frm.assunto.value)err+="* Assunto\n";
	if(!frm.msg.value)err+="* Mensagem\n";
	
	if(err == "Os items com * devem ser preenchidos.\nPreencha os seguintes campos:\n"){frm.submit()}else{alert(err)}
	}