$(document).ready(function(){
	$(".encontre form").submit(function(){
		if(($("select:eq(0)", this).val() == "" || $("select:eq(0) option:selected", this).text() == "Cidade") &&
			($("select:eq(1)", this).val() == "" || $("select:eq(1) option:selected", this).text() == "Tipo") &&
			($("select:eq(2)", this).val() == "" || $("select:eq(2) option:selected", this).text() == "Quartos")){
			alert("Selecione um parāmetro de pesquisa");
			return false;
		}else{
			return true;
		}
	});
});