function alterar_display(modo,id){
 var e = document.getElementById(id);
 var tipo = modo;
 if(modo == "escondido")
 {
 e.className = "amostra";
 }
 else
 {
 e.className = "escondido";
 }

}
function conteudo(url){
 doRequest(url,mostra,function(){});
 //$("informacoes").innerHTML = "<div class='loading'><img src='imagens/ajax-loader.gif'></div>";
}
function mostra(t){
 $("informacoes").innerHTML = t
}
function conteudoform(url,form){
 doRequest(url,resultForm,$(form))
 $("informacoes").innerHTML = "<div class='loading'><center><img src='imagens/ajax-loader.gif'></center></div>";
}
function resultForm(t){
 $("informacoes").innerHTML = t
}