function favorito(imob,ref,opt) {
	var pg='v';
	fav_src_tmp = $('#fav'+imob+ref).attr("src");
	if (fav_src_tmp.search("sim")!='-1') {
		opt='del';
		fav_src="images/lista/fav_nao.png";
	} else {
		opt='add';
		fav_src = "images/lista/fav_sim.png";
	}
	
	$.post('inc/xml/favoritos.asp', {pg:pg, imob:imob, ref:ref, opt:opt},function(f){
		$('#fav'+imob+ref).attr("src", fav_src);
	});
}